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The key moment came 38 minutes after Starship roared off the launch pad

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SpaceX wasn’t able to catch the Super Heavy booster, but Starship is on the cusp of orbital flight.

The sixth flight of Starship lifts off from SpaceX’s Starbase launch site at Boca Chica Beach, Texas. Credit: SpaceX.

SpaceX launched its sixth Starship rocket Tuesday, proving for the first time that the stainless steel ship can maneuver in space and paving the way for an even larger, upgraded vehicle slated to debut on the next test flight.

The only hiccup was an abortive attempt to catch the rocket’s Super Heavy booster back at the launch site in South Texas, something SpaceX achieved on the previous flight on October 13. The Starship upper stage flew halfway around the world, reaching an altitude of 118 miles (190 kilometers) before plunging through the atmosphere for a pinpoint slow-speed splashdown in the Indian Ocean.

The sixth flight of the world’s largest launcher—standing 398 feet (121.3 meters) tall—began with a lumbering liftoff from SpaceX’s Starbase facility near the US-Mexico border at 4 pm CST (22: 00 UTC) Tuesday. The rocket headed east over the Gulf of Mexico, propelled by 33 Raptor engines clustered on the bottom of its Super Heavy first stage.

A few miles away, President-elect Donald Trump joined SpaceX founder Elon Musk to witness the launch. The SpaceX boss became one of Trump’s closest allies in this year’s presidential election, giving the world’s richest man extraordinary influence in US space policy. Sen. Ted Cruz (R-Texas) was there, too, among other lawmakers. Gen. Chance Saltzman, the top commander in the US Space Force, stood nearby, chatting with Trump and other VIPs.

Elon Musk, SpaceX’s CEO, President-elect Donald Trump, and Gen. Chance Saltzman of the US Space Force watch the sixth launch of Starship Tuesday. Credit: Brandon Bell/Getty Images

From their viewing platform, they watched Starship climb into a clear autumn sky. At full power, the 33 Raptors chugged more than 40,000 pounds of super-cold liquid methane and liquid oxygen per second. The engines generated 16.7 million pounds of thrust, 60 percent more than the Soviet N1, the second-largest rocket in history.

Eight minutes later, the rocket’s upper stage, itself also known as Starship, was in space, completing the program’s fourth straight near-flawless launch. The first two test flights faltered before reaching their planned trajectory.

A brief but crucial demo

As exciting as it was, we’ve seen all that before. One of the most important new things engineers wanted to test on this flight occurred about 38 minutes after liftoff.

That’s when Starship reignited one of its six Raptor engines for a brief burn to make a slight adjustment to its flight path. The burn lasted only a few seconds, and the impulse was small—just a 48 mph (77 km/hour) change in velocity, or delta-V—but it demonstrated that the ship can safely deorbit itself on future missions.

With this achievement, Starship will likely soon be cleared to travel into orbit around Earth and deploy Starlink Internet satellites or conduct in-space refueling experiments, two of the near-term objectives on SpaceX’s Starship development roadmap.

Launching Starlinks aboard Starship will allow SpaceX to expand the capacity and reach of its commercial consumer broadband network, which, in turn, provides revenue for Musk to reinvest into Starship. Orbital refueling enables Starship voyages beyond low-Earth orbit, fulfilling SpaceX’s multibillion-dollar contract with NASA to provide a human-rated Moon lander for the agency’s Artemis program. Likewise, transferring cryogenic propellants in orbit is a prerequisite for sending Starships to Mars, making real Musk’s dream of creating a settlement on the red planet.

Artist’s illustration of Starship on the surface of the Moon. Credit: SpaceX

Until now, SpaceX has intentionally launched Starships to speeds just shy of the blistering velocities needed to maintain orbit. Engineers wanted to test the Raptor’s ability to reignite in space on the third Starship test flight in March, but the ship lost control of its orientation, and SpaceX canceled the engine firing.

Before going for a full orbital flight, officials needed to confirm that Starship could steer itself back into the atmosphere for reentry, ensuring it wouldn’t present any risk to the public with an unguided descent over a populated area. After Tuesday, SpaceX can check this off its to-do list.

“Congrats to SpaceX on Starship’s sixth test flight,” NASA Administrator Bill Nelson posted on X. “Exciting to see the Raptor engine restart in space—major progress towards orbital flight. Starship’s success is Artemis’ success. Together, we will return humanity to the Moon & set our sights on Mars.”

While it lacks the pizzazz of a fiery launch or landing, the engine relight unlocks a new phase of Starship development. SpaceX has now proven that the rocket is capable of reaching space with a fair measure of reliability. Next, engineers will fine-tune how to reliably recover the booster and the ship and learn how to use them.

Acid test

SpaceX appears well on its way to doing this. While SpaceX didn’t catch the Super Heavy booster with the launch tower’s mechanical arms Tuesday, engineers have shown they can do it. The challenge of catching Starship itself back at the launch pad is more daunting. The ship starts its reentry thousands of miles from Starbase, traveling approximately 17,000 mph (27,000 km/hour), and must thread the gap between the tower’s catch arms within a matter of inches.

The good news is that SpaceX has now twice proven it can bring Starship back to a precision splashdown in the Indian Ocean. In October, the ship settled into the sea in darkness. SpaceX moved the launch time for Tuesday’s flight to the late afternoon, setting up for splashdown shortly after sunrise northwest of Australia.

The shift in time paid off with some stunning new visuals. Cameras mounted on the outside of Starship beamed dazzling live views back to SpaceX through the Starlink network, showing a now-familiar glow of plasma encasing the spacecraft as it plowed deeper into the atmosphere. But this time, daylight revealed the ship’s flaps moving to control its belly-first descent toward the ocean. After passing through a deck of low clouds, Starship reignited its Raptor engines and tilted from horizontal to vertical, making contact with the water tail-first within view of a floating buoy and a nearby aircraft in position to observe the moment.

Here’s a replay of the spacecraft’s splashdown around 65 minutes after launch.

Splashdown confirmed! Congratulations to the entire SpaceX team on an exciting sixth flight test of Starship! pic.twitter.com/bf98Va9qmL

— SpaceX (@SpaceX) November 19, 2024

The ship made it through reentry despite flying with a substandard heat shield. Starship’s thermal protection system is made up of thousands of ceramic tiles to protect the ship from temperatures as high as 2,600° Fahrenheit (1,430° Celsius).

Kate Tice, a SpaceX engineer hosting the company’s live broadcast of the mission, said teams at Starbase removed 2,100 heat shield tiles from Starship ahead of Tuesday’s launch. Their removal exposed wider swaths of the ship’s stainless steel skin to super-heated plasma, and SpaceX teams were eager to see how well the spacecraft held up during reentry. In the language of flight testing, this approach is called exploring the corners of the envelope, where engineers evaluate how a new airplane or rocket performs in extreme conditions.

“Don’t be surprised if we see some wackadoodle stuff happen here,” Tice said. There was nothing of the sort. One of the ship’s flaps appeared to suffer some heating damage, but it remained intact and functional, and the harm looked to be less substantial than damage seen on previous flights.

Many of the removed tiles came from the sides of Starship where SpaceX plans to place catch fittings on future vehicles. These are the hardware protuberances that will catch on the top side of the launch tower’s mechanical arms, similar to fittings used on the Super Heavy booster.

“The next flight, we want to better understand where we can install catch hardware, not necessarily to actually do the catch but to see how that hardware holds up in those spots,” Tice said. “Today’s flight will help inform ‘does the stainless steel hold up like we think it may, based on experiments that we conducted on Flight 5?'”

Musk wrote on his social media platform X that SpaceX could try to bring Starship back to Starbase for a catch on the eighth test flight, which is likely to occur in the first half of 2025.

“We will do one more ocean landing of the ship,” Musk said. “If that goes well, then SpaceX will attempt to catch the ship with the tower.”

The heat shield, Musk added, is a focal point of SpaceX’s attention. The delicate heat-absorbing tiles used on the belly of the space shuttle proved vexing to NASA technicians. Early in the shuttle’s development, NASA had trouble keeping tiles adhered to the shuttle’s aluminum skin. Each of the shuttle tiles was custom-machined to fit on a specific location on the orbiter, complicating refurbishment between flights. Starship’s tiles are all hexagonal in shape and agnostic to where technicians place them on the vehicle.

“The biggest technology challenge remaining for Starship is a fully & immediately reusable heat shield,” Musk wrote on X. “Being able to land the ship, refill propellant & launch right away with no refurbishment or laborious inspection. That is the acid test.”

This photo of the Starship vehicle for Flight 6, numbered Ship 31, shows exposed portions of the vehicle’s stainless steel skin after tile removal. Credit: SpaceX

There were no details available Tuesday night on what caused the Super Heavy booster to divert from its planned catch on the launch tower. After detaching from the Starship upper stage less than three minutes into the flight, the booster reversed course to begin the journey back to Starbase.

Then SpaceX’s flight director announced the rocket would fly itself into the Gulf rather than back to the launch site: “Booster offshore divert.”

The booster finished its descent with a seemingly perfect landing burn using a subset of its Raptor engines. As expected after the water landing, the booster—itself 233 feet (71 meters) tall—toppled and broke apart in a dramatic fireball visible to onshore spectators.

In an update posted to its website after the launch, SpaceX said automated health checks of hardware on the launch and catch tower triggered the aborted catch attempt. The company did not say what system failed the health check. As a safety measure, SpaceX must send a manual command for the booster to come back to land in order to prevent a malfunction from endangering people or property.

Turning it up to 11

There will be plenty more opportunities for more booster catches in the coming months as SpaceX ramps up its launch cadence at Starbase. Gwynne Shotwell, SpaceX’s president and chief operating officer, hinted at the scale of the company’s ambitions last week.

“We just passed 400 launches on Falcon, and I would not be surprised if we fly 400 Starship launches in the next four years,” she said at the Barron Investment Conference.

The next batch of test flights will use an improved version of Starship designated Block 2, or V2. Starship Block 2 comes with larger propellant tanks, redesigned forward flaps, and a better heat shield.

The new-generation Starship will hold more than 11 million pounds of fuel and oxidizer, about a million pounds more than the capacity of Starship Block 1. The booster and ship will produce more thrust, and Block 2 will measure 408 feet (124.4 meters) tall, stretching the height of the full stack by a little more than 10 feet.

Put together, these modifications should give Starship the ability to heave a payload of up to 220,000 pounds (100 metric tons) into low-Earth orbit, about twice the carrying capacity of the first-generation ship. Further down the line, SpaceX plans to introduce Starship Block 3 to again double the ship’s payload capacity.

Just as importantly, these changes are designed to make it easier for SpaceX to recover and reuse the Super Heavy booster and Starship upper stage. SpaceX’s goal of fielding a fully reusable launcher builds on the partial reuse SpaceX pioneered with its Falcon 9 rocket. This should dramatically bring down launch costs, according to SpaceX’s vision.

With Tuesday’s flight, it’s clear Starship works. Now it’s time to see what it can do.

Updated with additional details, quotes, and images.

Photo of Stephen Clark

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

The key moment came 38 minutes after Starship roared off the launch pad Read More »

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Rocket Report: Australia says yes to the launch; Russia delivers for Iran

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The world’s first wooden satellite arrived at the International Space Station this week.

A Falcon 9 booster fires its engines on SpaceX’s “tripod” test stand in McGregor, Texas. Credit: SpaceX

Welcome to Edition 7.19 of the Rocket Report! Okay, we get it. We received more submissions from our readers on Australia’s approval of a launch permit for Gilmour Space than we’ve received on any other news story in recent memory. Thank you for your submissions as global rocket activity continues apace. We’ll cover Gilmour in more detail as they get closer to launch. There will be no Rocket Report next week as Eric and I join the rest of the Ars team for our 2024 Technicon in New York.

As always, we welcome reader submissions. If you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

Gilmour Space has a permit to fly. Gilmour Space Technologies has been granted a permit to launch its 82-foot-tall (25-meter) orbital rocket from a spaceport in Queensland, Australia. The space company, founded in 2012, had initially planned to lift off in March but was unable to do so without approval from the Australian Space Agency, the Australian Broadcasting Corporation reports. The government approved Gilmour’s launch permit Monday, although the company is still weeks away from flying its three-stage Eris rocket.

A first for Australia … Australia hosted a handful of satellite launches with US and British rockets from 1967 through 1971, but Gilmour’s Eris rocket would become the first all-Australian launch vehicle to reach orbit. The Eris rocket is capable of delivering about 670 pounds (305 kilograms) of payload mass into a Sun-synchronous orbit. Eris will be powered by hybrid rocket engines burning a solid fuel mixed with a liquid oxidizer, making it unique among orbital-class rockets. Gilmour completed a wet dress rehearsal, or practice countdown, with the Eris rocket on the launch pad in Queensland in September. The launch permit becomes active after 30 days, or the first week of December. “We do think we’ve got a good chance of launching at the end of the 30-day period, and we’re going to give it a red hot go,” said Adam Gilmour, the company’s co-founder and CEO. (submitted by Marzipan, mryall, ZygP, Ken the Bin, Spencer Willis, MarkW98, and EllPeaTea)

North Korea tests new missile. North Korea apparently completed a successful test of its most powerful intercontinental ballistic missile on October 31, lofting it nearly 4,800 miles (7,700 kilometers) into space before the projectile fell back to Earth, Ars reports. This solid-fueled, multi-stage missile, named the Hwasong-19, is a new tool in North Korea’s increasingly sophisticated arsenal of weapons. It has enough range—perhaps as much as 9,320 miles (15,000 kilometers), according to Japan’s government—to strike targets anywhere in the United States. It also happens to be one of the largest ICBMs in the world, rivaling the missiles fielded by the world’s more established nuclear powers.

Quid pro quo? … The Hwasong-19 missile test comes as North Korea deploys some 10,000 troops inside Russia to support the country’s war against Ukraine. The budding partnership between Russia and North Korea has evolved for several years. Russian President Vladimir Putin has met with North Korean leader Kim Jong Un on multiple occasions, most recently in Pyongyang in June. This has fueled speculation about what Russia is offering North Korea in exchange for the troops deployed on Russian soil. US and South Korean officials have some thoughts. They said North Korea is likely to ask for technology transfers in diverse areas related to tactical nuclear weapons, ICBMs, and reconnaissance satellites.

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Virgin Galactic is on the hunt for cash. Virgin Galactic is proposing to raise $300 million in additional capital to accelerate production of suborbital spaceplanes and a mothership aircraft the company says can fuel its long-term growth, Space News reports. The company, founded by billionaire Richard Branson, suspended operations of its VSS Unity suborbital spaceplane earlier this year. VSS Unity hit a monthly flight cadence carrying small groups of space tourists and researchers to the edge of space, but it just wasn’t profitable. Now, Virgin Galactic is developing larger Delta-class spaceplanes it says will be easier and cheaper to turn around between flights.

All-in with Delta … Michael Colglazier, Virgin Galactic’s CEO, announced the company’s appetite for fundraising in a quarterly earnings call with investment analysts Wednesday. He said manufacturing of components for Virgin Galactic’s first two Delta-class ships, which the company says it can fund with existing cash, is proceeding on schedule at a factory in Arizona. Virgin Galactic previously said it would use revenue from paying passengers on its first two Delta-class ships to pay for development of future vehicles. Instead, Virgin Galactic now says it wants to raise money to speed up work on the third and fourth Delta-class vehicles, along with a second airplane mothership to carry the spaceplanes aloft before they release and fire into space. (submitted by Ken the Bin and EllPeaTea)

ESA breaks its silence on Themis. The European Space Agency has provided a rare update on the progress of its Themis reusable booster demonstrator project, European Spaceflight reports. ESA is developing the Themis test vehicle for atmospheric flights to fine-tune technologies for a future European reusable rocket capable of vertical takeoffs and vertical landings. Themis started out as a project led by CNES, the French space agency, in 2018. ESA member states signed up to help fund the project in 2019, and the agency awarded ArianeGroup a contract to move forward with Themis in 2020. At the time, the first low-altitude hop test was expected to take place in 2022.

Some slow progress … Now, the first low-altitude hop is scheduled for 2025 from Esrange Space Centre in Sweden, a three-year delay. This week, ESA said engineers have completed testing of the Themis vehicle’s main systems, and assembly of the demonstrator is underway in France. A single methane-fueled Prometheus engine, also developed by ArianeGroup, has been installed on the rocket. Teams are currently adding avionics, computers, electrical systems, and cable harnesses. Themis’ stainless steel propellant tanks have been manufactured, tested, and cleaned and are now ready to be installed on the Themis demonstrator. Then, the rocket will travel by road from France to the test site in Sweden for its initial low-altitude hops. After those flights are complete, officials plan to add two more Prometheus engines to the rocket and ship it to French Guiana for high-altitude test flights. (submitted by Ken the Bin and EllPeaTea)

SpaceX will give the ISS a boost. A Cargo Dragon spacecraft docked to the International Space Station on Tuesday morning, less than a day after lifting off from Florida. As space missions go, this one is fairly routine, ferrying about 6,000 pounds (2,700 kilograms) of cargo and science experiments to the space station. One thing that’s different about this mission is that it delivered to the station a tiny 2 lb (900 g) satellite named LignoSat, the first spacecraft made of wood, for later release outside the research complex. There is one more characteristic of this flight that may prove significant for NASA and the future of the space station, Ars reports. As early as Friday, NASA and SpaceX have scheduled a “reboost and attitude control demonstration,” during which the Dragon spacecraft will use some of the thrusters at the base of the capsule. This is the first time the Dragon spacecraft will be used to move the space station.

Dragon’s breath … Dragon will fire a subset of its 16 Draco thrusters, each with about 90 pounds of thrust, for approximately 12.5 minutes to make a slight adjustment to the orbital trajectory of the roughly 450-ton space station. SpaceX and NASA engineers will analyze the results from the demonstration to determine if Dragon could be used for future space station reboost opportunities. The data will also inform the design of the US Deorbit Vehicle, which SpaceX is developing to perform the maneuvers required to bring the space station back to Earth for a controlled, destructive reentry in the early 2030s. For NASA, demonstrating Dragon’s ability to move the space station will be another step toward breaking free of reliance on Russia, which is currently responsible for providing propulsion to maneuver the orbiting outpost. Northrop Grumman’s Cygnus supply ship also previously demonstrated a reboost capability. (submitted by Ken the Bin and N35t0r)

Russia launches Soyuz in service of Iran. Russia launched a Soyuz rocket Monday carrying two satellites designed to monitor the space weather around Earth and 53 small satellites, including two Iranian ones, Reuters reports. The primary payloads aboard the Soyuz-2.1b rocket were two Ionosfera-M satellites to probe the ionosphere, an outer layer of the atmosphere near the edge of space. Solar activity can alter conditions in the ionosphere, impacting communications and navigation. The two Iranian satellites on this mission were named Kowsar and Hodhod. They will collect high-resolution reconnaissance imagery and support communications for Iran.

A distant third … This was only the 13th orbital launch by Russia this year, trailing far behind the United States and China. We know of two more Soyuz flights planned for later this month, but no more, barring a surprise military launch (which is possible). The projected launch rate puts Russia on pace for its quietest year of launch activity since 1961, the year Yuri Gagarin became the first person to fly in space. A major reason for this decline in launches is the decisions of Western governments and companies to move their payloads off of Russian rockets after the invasion of Ukraine. For example, OneWeb stopped launching on Soyuz in 2022, and the European Space Agency suspended its partnership with Russia to launch Soyuz rockets from French Guiana. (submitted by Ken the Bin)

H3 deploys Japanese national security satellite. Japan launched a defense satellite Monday aimed at speedier military operations and communication on an H3 rocket and successfully placed it into orbit, the Associated Press reports. The Kirameki 3 satellite will use high-speed X-band communication to support Japan’s defense ministry with information and data sharing, and command and control services. The satellite will serve Japanese land, air, and naval forces from its perch in geostationary orbit alongside two other Kirameki communications satellites.

Gaining trust … The H3 is Japan’s new flagship rocket, developed by Mitsubishi Heavy Industries (MHI) and funded by the Japan Aerospace Exploration Agency (JAXA). The launch of Kirameki 3 marked the third consecutive successful launch of the H3 rocket, following a debut flight in March 2023 that failed to reach orbit. This was the first time Japan’s defense ministry put one of its satellites on the H3 rocket. The first two Kirameki satellites launched on a European Ariane 5 and a Japanese H-IIA rocket, which the H3 will replace. (submitted by Ken the Bin, tsunam, and EllPeaTea)

Rocket Lab enters the race for military contracts. Rocket Lab is aiming to chip away at SpaceX’s dominance in military space launch, confirming its bid to compete for Pentagon contracts with its new medium-lift rocket, Neutron, Space News reports. Last month, the Space Force released a request for proposals from launch companies seeking to join the military’s roster of launch providers in the National Security Space Launch (NSSL) program. The Space Force will accept bids for launch providers to “on-ramp” to the NSSL Phase 3 Lane 1 contract, which doles out task orders to launch companies for individual missions. In order to win a task order, a launch provider must be on the Phase 3 Lane 1 contract. Currently, SpaceX, United Launch Alliance, and Blue Origin are the only rocket companies eligible. SpaceX won all of the first round of Lane 1 task orders last month.

Joining the club … The Space Force is accepting additional risk for Lane 1 missions, which largely comprise repeat launches deploying a constellation of missile-tracking and data-relay satellites for the Space Development Agency. A separate class of heavy-lift missions, known as Lane 2, will require rockets to undergo a thorough certification by the Space Force to ensure their reliability. In order for a launch company to join the Lane 1 roster, the Space Force requires bidders to be ready for a first launch by December 2025. Peter Beck, Rocket Lab’s founder and CEO, said he thinks the Neutron rocket will be ready for its first launch by then. Other new medium-lift rockets, such as Firefly Aerospace’s MLV and Relativity’s Terran-R, almost certainly won’t be ready to launch by the end of next year, leaving Rocket Lab as the only company that will potentially join incumbents SpaceX, ULA, and Blue Origin. (submitted by Ken the Bin)

Next Starship flight is just around the corner. Less than a month has passed since the historic fifth flight of SpaceX’s Starship, during which the company caught the booster with mechanical arms back at the launch pad in Texas. Now, another test flight could come as soon as November 18, Ars reports. The improbable but successful recovery of the Starship first stage with “chopsticks” last month, and the on-target splashdown of the Starship upper stage halfway around the world, allowed SpaceX to avoid an anomaly investigation by the Federal Aviation Administration. Thus, the company was able to press ahead on a sixth test flight if it flew a similar profile. And that’s what SpaceX plans to do, albeit with some notable additions to the flight plan.

Around the edges … Perhaps the most significant change to the profile for Flight 6 will be an attempt to reignite a Raptor engine on Starship while it is in space. SpaceX tried to do this on a test flight in March but aborted the burn because the ship’s rolling motion exceeded limits. A successful demonstration of a Raptor engine relight could pave the way for SpaceX to launch Starship into a higher stable orbit around Earth on future test flights. This is required for SpaceX to begin using Starship to launch Starlink Internet satellites and perform in-orbit refueling experiments with two ships docked together. (submitted by EllPeaTea)

China’s version of Starship. China has updated the design of its next-generation heavy-lift rocket, the Long March 9, and it looks almost exactly like a clone of SpaceX’s Starship rocket, Ars reports. The Long March 9 started out as a conventional-looking expendable rocket, then morphed into a launcher with a reusable first stage. Now, the rocket will have a reusable booster and upper stage. The booster will have 30 methane-fueled engines, similar to the number of engines on SpaceX’s Super Heavy booster. The upper stage looks remarkably like Starship, with flaps in similar locations. China intends to fly this vehicle for the first time in 2033, nearly a decade from now.

A vehicle for the Moon … The reusable Long March 9 is intended to unlock robust lunar operations for China, similar to the way Starship, and to some extent Blue Origin’s Blue Moon lander, promises to support sustained astronaut stays on the Moon’s surface. China says it plans to land its astronauts on the Moon by 2030, initially using a more conventional architecture with an expendable rocket named the Long March 10, and a lander reminiscent of NASA’s Apollo lunar lander. These will allow Chinese astronauts to remain on the Moon for a matter of days. With Long March 9, China could deliver massive loads of cargo and life support resources to sustain astronauts for much longer stays.

Ta-ta to the tripod. The large three-legged vertical test stand at SpaceX’s engine test site in McGregor, Texas, is being decommissioned, NASA Spaceflight reports. Cranes have started removing propellant tanks from the test stand, nicknamed the tripod, towering above the Central Texas prairie. McGregor is home to SpaceX’s propulsion test team and has 16 test cells to support firings of Merlin, Raptor, and Draco engines multiple times per day for the Falcon 9 rocket, Starship, and Dragon spacecraft.

Some history … The tripod might have been one of SpaceX’s most important assets in the company’s early years. It was built by Beal Aerospace for liquid-fueled rocket engine tests in the late 1990s. Beal Aerospace folded, and SpaceX took over the site in 2003. After some modifications, SpaceX installed the first qualification version of its Falcon 9 rocket on the tripod for a series of nine-engine test-firings leading up to the rocket’s inaugural flight in 2010. SpaceX test-fired numerous new Falcon 9 boosters on the tripod before shipping them to launch sites in Florida or California. Most recently, the tripod was used for testing of Raptor engines destined to fly on Starship and the Super Heavy booster.

Next three launches

Nov. 9:  Long March 2C | Unknown Payload | Jiuquan Satellite Launch Center, China | 03: 40 UTC

Nov. 9: Falcon 9 | Starlink 9-10 | Vandenberg Space Force Base, California | 06: 14 UTC

Nov. 10:  Falcon 9 | Starlink 6-69 | Cape Canaveral Space Force Station, Florida | 21: 28 UTC

Photo of Stephen Clark

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

Rocket Report: Australia says yes to the launch; Russia delivers for Iran Read More »

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The next Starship launch may occur in less than two weeks

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The company will also use Starship’s next flight to assess new tiles and other elements of the vehicle’s heat shield.

“Several thermal protection experiments and operational changes will test the limits of Starship’s capabilities and generate flight data to inform plans for ship catch and reuse,” the company’s statement said. “The flight test will assess new secondary thermal protection materials and will have entire sections of heat shield tiles removed on either side of the ship in locations being studied for catch-enabling hardware on future vehicles. The ship also will intentionally fly at a higher angle of attack in the final phase of descent, purposefully stressing the limits of flap control to gain data on future landing profiles.”

Final flight of the first Starship

The five previous flights of Starship, dating back to April 2023, have all launched near dawn from South Texas. For the upcoming mission, the company will look for a late-afternoon launch window, which will allow the vehicle to reenter during daylight into the Indian Ocean.

SpaceX’s update also confirms that this will be the last flight of the initial version of the Starship vehicle, with the next generation including redesigned forward flaps, larger propellant tanks, and newer tiles and secondary thermal protection layers.

Reaching a near-monthly cadence of Starship flights during only the second year of the vehicle’s operation is impressive, but it’s also essential if SpaceX wants to unlock the full potential of a rocket that needs multiple refueling launches to support Starship missions to the Moon or Mars.

Wednesday’s announcement comes the day after the US presidential election in which Donald Trump was given a second term by American voters, and it is notable that he was assisted in this through an all-out effort by SpaceX founder Elon Musk.

Musk’s interventions in politics were highly controversial and alienated a significant segment of the US population and political class. Nevertheless Musk’s gambit paid off, as the election of Trump will now likely accelerate Starship’s development and increase its centrality to the nation’s space exploration endeavors.

However, the timing of this launch announcement is likely coincidental, as SpaceX did not need formal regulatory approval to move ahead with this sixth attempt—it was almost entirely dependent on the readiness of the company’s hardware, software, and ground systems.

The next Starship launch may occur in less than two weeks Read More »

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Rocket Report: Sneak peek at the business end of New Glenn; France to fly FROG

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“The vehicle’s max design gimbal condition is during ascent when it has to fight high-altitude winds.”

Blue Origin’s first New Glenn rocket, with seven BE-4 engines installed inside the company’s production facility near NASA’s Kennedy Space Center in Florida. Credit: Blue Origin

Welcome to Edition 7.17 of the Rocket Report! Next week marks 10 years since one of the more spectacular launch failures of this century. On October 28, 2014, an Antares rocket, then operated by Orbital Sciences, suffered an engine failure six seconds after liftoff from Virginia and crashed back onto the pad in a fiery twilight explosion. I was there and won’t forget seeing the rocket falter just above the pad, being shaken by the deafening blast, and then running for cover. The Antares rocket is often an afterthought in the space industry, but it has an interesting backstory touching on international geopolitics, space history, and novel engineering. Now, Northrop Grumman and Firefly Aerospace are developing a new version of Antares.

As always, we welcome reader submissions. If you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

Astra gets a lifeline from DOD. Astra, the launch startup that was taken private again earlier this year for a sliver of its former value, has landed a new contract with the Defense Innovation Unit (DIU) to support the development of a next-gen launch system for time-sensitive space missions, TechCrunch reports. The contract, which the DIU awarded under its Novel Responsive Space Delivery (NRSD) program, has a maximum value of $44 million. The money will go toward the continued development of Astra’s Launch System 2, designed to perform rapid, ultra-low-cost launches.

Guarantees? … It wasn’t clear from the initial reporting how much money DIU is actually committing to Astra, which said the contract will fund continued development of Launch System 2. Launch System 2 includes a small-class launch vehicle with a similarly basic name, Rocket 4, and mobile ground infrastructure designed to be rapidly set up at austere spaceports. Adam London, founder and chief technology officer at Astra, said the contract award is a “major vote of confidence” in the company. If Astra can capitalize on the opportunity, this would be quite a remarkable turnaround. After going public at an initial valuation of $2.1 billion, or $12.90 per share, Astra endured multiple launch failures with its previous rocket and risked bankruptcy before the company’s co-founders, Chris Kemp and Adam London, took the company private again this year at a price of just $0.50 per share. (submitted by Ken the Bin and EllPeaTea)

Blue Origin debuts a new New Shepard. Jeff Bezos’ Blue Origin space venture successfully sent a brand-new New Shepard rocket ship on an uncrewed shakedown cruise Wednesday, with the aim of increasing the company’s capacity to take people on suborbital space trips, GeekWire reports. The capsule, dubbed RSS Karman Line, carried payloads instead of people when it lifted off from Blue Origin’s Launch Site One in West Texas. But if all the data collected during the 10-minute certification flight checks out, it won’t be long before crews climb aboard for similar flights.

Now there are two … With this week’s flight, Blue Origin now has two human-rated suborbital capsules in its fleet, along with two boosters. This should allow the company to ramp up the pace of its human missions, which have historically flown at a cadence of about one flight every two to three months. The new capsule, named for the internationally recognized boundary of space 62 miles (100 kilometers) above Earth, features upgrades to improve performance and ease reusability. (submitted by Ken the Bin and EllPeaTea)

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China has a new space tourism company. Chinese launch startup Deep Blue Aerospace targets providing suborbital tourism flights starting in 2027, Space News reports. The company was already developing a partially reusable orbital rocket named Nebula-1 for satellite launches and recently lost a reusable booster test vehicle during a low-altitude test flight. While Deep Blue moves forward with more Nebula-1 testing before its first orbital launch, the firm is now selling tickets for rides to suborbital space on a six-person capsule. The first two tickets were expected to be sold Thursday in a promotional livestream event.

Architectural considerations … Deep Blue has a shot at becoming China’s first space tourism company and one of only a handful in the world, joining US-based Blue Origin and Virgin Galactic in the market for suborbital flights. Deep Blue’s design will be a single-stage reusable rocket and crew capsule, similar to Blue Origin’s New Shepard, capable of flying above the Kármán line and providing up to 10 minutes of microgravity experience for its passengers before returning to the ground. A ticket, presumably for a round trip, will cost about $210,000. (submitted by Ken the Bin)

France’s space agency aims to launch a FROG. French space agency CNES will begin flight testing a small reusable rocket demonstrator called FROG-H in 2025, European Spaceflight reports. FROG is a French acronym that translates to Rocket for GNC demonstration, and its purpose is to test landing algorithms for reusable launch vehicles. CNES manages the program in partnership with French nonprofits and universities. At 11.8 feet (3.6 meters) tall, FROG is the smallest launch vehicle prototype at CNES, which says it will test concepts and technologies at small scale before incorporating them into Europe’s larger vertical takeoff/vertical landing test rockets like Callisto and Themis. Eventually, the idea is for all this work to lead to a reusable European orbital-class rocket.

Building on experience … CNES flew a jet-powered demonstrator named FROG-T on five test flights beginning in May 2019, reaching a maximum altitude of about 100 feet (30 meters). FROG-H will be powered by a hydrogen peroxide rocket engine developed by the Łukasiewicz Institute of Aviation in Poland under a European Space Agency contract. The first flights of FROG-H are scheduled for early 2025. The structure of the FROG project seeks to “break free from traditional development methods” by turning to “teams of enthusiasts” to rapidly develop and test solutions through an experimental approach, CNES says on its website. (submitted by EllPeaTea and Ken the Bin)

Falcon 9 sweeps NSSL awards. The US Space Force’s Space Systems Command announced on October 18 it has ordered nine launches from SpaceX in the first batch of dozens of missions the military will buy in a new phase of competition for lucrative national security launch contracts, Ars reports. The parameters of the competition limited the bidders to SpaceX and United Launch Alliance (ULA). SpaceX won both task orders for a combined value of $733.5 million, or roughly $81.5 million per mission. Six of the nine missions will launch from Vandenberg Space Force Base, California, beginning as soon as late 2025. The other three will launch from Cape Canaveral Space Force Station, Florida.

Head-to-head … This was the first set of contract awards by the Space Force’s National Security Space Launch (NSSL) Phase 3 procurement round and represents one of the first head-to-head competitions between SpaceX’s Falcon 9 and ULA’s Vulcan rocket. The nine launches were divided into two separate orders, and SpaceX won both. The missions will deploy payloads for the National Reconnaissance Office and the Space Development Agency. (submitted by Ken the Bin)

SpaceX continues deploying NRO megaconstellation. SpaceX launched more surveillance satellites for the National Reconnaissance Office Thursday aboard a Falcon 9 rocket, Spaceflight Now reports. While the secretive spy satellite agency did not identify the number or exact purpose of the satellites, the Falcon 9 likely deployed around 20 spacecraft believed to be based on SpaceX’s Starshield satellite bus, a derivative of the Starlink spacecraft platform, with participation from Northrop Grumman. These satellites host classified sensors for the NRO.  This is the fourth SpaceX launch for the NRO’s new satellite fleet, which seeks to augment the agency’s bespoke multibillion-dollar spy satellites with a network of smaller, cheaper, more agile platforms in low-Earth orbit.

The century mark … This mission, officially designated NROL-167, was the 100th flight of a Falcon 9 rocket this year and the 105th SpaceX launch overall in 2024. The NRO has not said how many satellites will make up its fleet when completed, but the intelligence agency says it will be the US government’s largest satellite constellation in history. By the end of the year, the NRO expects to have 100 or more of these satellites in orbit, allowing the agency to transition from a demonstration mode to an operational mode to deliver intelligence data to military and government users. Many more launches are expected through 2028. (submitted by Ken the Bin)

ULA is stacking its third Vulcan rocket. United Launch Alliance has started assembling its next Vulcan rocket—the first destined to launch a US military payload—as the Space Force prepares to certify it to loft the Pentagon’s most precious national security satellites, Ars reports. Space Force officials expect to approve ULA’s Vulcan rocket for military missions without requiring another test flight, despite an unusual problem on the rocket’s second demonstration flight earlier this month, when one of Vulcan’s two strap-on solid-fueled boosters lost its nozzle shortly after liftoff.

Pending certification … Despite the nozzle failure, the Vulcan rocket continued climbing into space and eventually reached its planned injection orbit, and the Space Force and ULA declared the test flight a success. Still, engineers want to understand what caused the nozzle to break apart and decide on corrective actions before the Space Force clears the Vulcan rocket to launch a critical national security payload. This could take a little longer than expected due to the booster problem, but Space Force officials still hope to certify the Vulcan rocket in time to support a national security launch by the end of the year.

Blue Origin’s first New Glenn has all its engines. Blue Origin published a photo Thursday on X showing all seven first-stage BE-4 engines installed on the base of the company’s first New Glenn rocket. This is a notable milestone as Blue Origin proceeds toward the first launch of the heavy-lifter, possibly before the end of the year. But there’s a lot of work for Blue Origin to accomplish before then. These steps include rolling the rocket to the launch pad, running through propellant loading tests and practice countdowns, and then test-firing all seven BE-4 engines on the pad at Cape Canaveral Space Force Station, Florida.

Seven for seven … The BE-4 engines will consume methane fuel mixed with liquid oxygen for the first few minutes of the New Glenn flight, generating more than 3.8 million pounds of combined thrust. The seven BE-4s on New Glenn are similar to the BE-4 engines that fly two at a time on ULA’s Vulcan rocket. Dave Limp, Blue Origin’s CEO, said three of the seven engines on the New Glenn first stage have thrust vector control capability to provide steering during launch, reentry, and landing on the company’s offshore recovery vessel. “That gimbal capability, along with the landing gear and Reaction Control System thrusters, are key to making our booster fully reusable,” Limp wrote on X. “Fun fact: The vehicle’s max design gimbal condition is during ascent when it has to fight high-altitude winds.”

Next Super Heavy booster test-fired in Texas. SpaceX fired up the Raptor engines on its next Super Heavy booster, numbered Booster 13, Thursday evening at the company’s launch site in South Texas. This happened just 11 days after SpaceX launched and caught the Super Heavy booster on the previous Starship test flight and signals SpaceX could be ready for the next Starship test flight sometime in November. SpaceX has already test-fired the Starship upper stage for the next flight.

Great expectations … We expect the next Starship flight, which will be program’s sixth full-scale demo mission, will include another booster catch back at the launch tower at Starbase, Texas. SpaceX may also attempt to reignite a Raptor engine on the Starship upper stage while it is in space, demonstrating the capability to steer itself back into the atmosphere on future flights. So far, SpaceX has only launched Starships on long, arcing suborbital trajectories that carry the vehicle halfway around the world before reentry. In order to actually launch a Starship into a stable orbit around Earth, SpaceX will want to show it can bring the vehicle back so it doesn’t reenter the atmosphere in an uncontrolled manner. An uncontrolled reentry of a large spacecraft like Starship could pose a public safety risk.

Next three launches

Oct. 26: Falcon 9 | Starlink 10-8 | Cape Canaveral Space Force Station, Florida | 21: 47 UTC

Oct. 29: Falcon 9 | Starlink 9-9 | Vandenberg Space Force Base, California | 11: 30 UTC

Oct. 30: H3 | Kirameki 3 | Tanegashima Space Center, Japan | 06: 46 UTC

Photo of Stephen Clark

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

Rocket Report: Sneak peek at the business end of New Glenn; France to fly FROG Read More »

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After seeing hundreds of launches, SpaceX’s rocket catch was a new thrill

Commercial space, launch, Science, Space, spacex, Starbase, starship, super heavy / /

For a few moments, my viewing angle made it look like the rocket was coming right at me.

Coming in for the catch. Credit: Stephen Clark/Ars Technica

BOCA CHICA BEACH, Texas—I’ve taken some time to process what happened on the mudflats of South Texas a little more than a week ago and relived the scene in my mind countless times.

With each replay, it’s still as astonishing as it was when I saw it on October 13, standing on an elevated platform less than 4 miles away. It was surreal watching SpaceX’s enormous 20-story-tall Super Heavy rocket booster plummeting through the sky before being caught back at its launch pad by giant mechanical arms.

This is the way, according to SpaceX, to enable a future where it’s possible to rapidly reuse rockets, not too different from the way airlines turn around their planes between flights. This is required for SpaceX to accomplish the company’s mission, set out by Elon Musk two decades ago, of building a settlement on Mars.

Of course, SpaceX’s cameras got much better views of the catch than mine. This is one of my favorite video clips.

The final phase of Super Heavy’s landing burn used the three center Raptor engines to precisely steer into catch position pic.twitter.com/BxQbOmT4yk

— SpaceX (@SpaceX) October 14, 2024

In the near-term future, regularly launching and landing Super Heavy boosters, and eventually the Starship upper stage that goes into orbit, will make it possible for SpaceX to achieve the rapid-fire launch cadence the company needs to fulfill its contracts with NASA. The space agency is paying SpaceX roughly $4 billion to develop a human-rated version of Starship to land astronauts on the Moon under the umbrella of the Artemis program.

To make that happen, SpaceX must launch numerous Starship tankers over the course of a few weeks to a few months to refuel the Moon-bound Starship lander in low-Earth orbit. Rapid reuse is fundamental to the lunar lander architecture NASA chose for the first two Artemis landing missions.

SpaceX, which is funding most of Starship’s development costs, says upgraded versions will be capable of hauling 200 metric tons of payload to low-Earth orbit while flying often at a relatively low cost. This would unlock innumerable other potential applications for the US military and commercial industry.

Here’s a sampling of the photos I captured of SpaceX’s launch and catch, followed by the story of how I got them.

The fifth full-scale test flight of SpaceX’s new-generation Starship rocket lifted off from South Texas at sunrise Sunday morning. Stephen Clark/Ars Technica

Some context

I probably spent too much time watching last week’s flight through my camera’s viewfinder, but I suspect I’ll see it many more times. After all, SpaceX wants to make this a routine occurrence, more common than the landings of the smaller Falcon 9 booster now happening several times per week.

Nine years ago, I watched from 7 miles away as SpaceX landed a Falcon 9 for the first time. This was the closest anyone not directly involved in the mission could watch as the Falcon 9’s first stage returned to Cape Canaveral Space Force Station in Florida, a few minutes after lifting off with a batch of commercial communications satellites.

Citing safety concerns, NASA and the US Air Force closed large swaths of the spaceport for the flight. Journalists and VIPs were kept far away, and the locations on the base where employees or special guests typically watch a launch were off-limits. The landing happened at night and played out like a launch in reverse, with the Falcon 9 booster settling to a smooth touchdown on a concrete landing pad a few miles from the launch site.

The Falcon 9 landing on December 21, 2015, came after several missed landings on SpaceX’s floating offshore drone ship. With the Super Heavy booster, SpaceX nailed the catch on the first try.

The catch method means the rocket doesn’t need to carry landing legs, as the Falcon 9 does. This reduces the rocket’s weight and complexity, and theoretically reduces the amount of time and money needed to prepare the rocket to fly again.

I witnessed the first catch of SpaceX’s Super Heavy booster last week from just outside the restricted zone around the company’s sprawling Starbase launch site in South Texas. Deputies from the local sheriff’s office patrolled the area to ensure no one strayed inside the keep-out area and set up roadblocks to turn away anyone who wasn’t supposed to be there.

The launch was early in the morning, so I arrived late the night before at a viewing site run by Rocket Ranch, a campground that caters to SpaceX fans seeking a front-row seat to the goings-on at Starbase. Some SpaceX employees, several other reporters, and media photographers were there, too.

There are other places to view a Starship launch. Condominium and hotel towers on South Padre Island roughly 6 miles from the launch pad, a little farther than my post, offer commanding aerial views of Starbase, which is situated on Boca Chica Beach a few miles north of the US-Mexico border. The closest publicly accessible place to watch a Starship launch is on the south shore of the mouth of the Rio Grande River, but if you’re coming from the United States, getting there requires crossing the border and driving off-road.

People gather at the Rocket Ranch viewing site near Boca Chica Beach, Texas, before the third Starship test flight in March.

People gather at the Rocket Ranch viewing site near Boca Chica Beach, Texas, before the third Starship test flight in March. Credit: Brandon Bell/Getty Images

I chose a location with an ambiance somewhere in between the hustle and bustle of South Padre Island and the isolated beach just across the border in Mexico. The vibe on the eve of the launch had the mix of a rave and a pilgrimage of SpaceX true believers.

A laser light show projected the outline of a Starship against a tree as uptempo EDM tracks blared from speakers. Meanwhile, dark skies above revealed cosmic wonders invisible to most city dwellers, and behind us, the Rio Grande inexorably flowed toward the sea. Those of us who were there to work got a few hours of sleep, but I’m not sure I can say the same for everyone.

At first light, a few scattered yucca plants sticking up from the chaparral were the only things between us and SpaceX’s sky-scraping Starship rocket on the horizon. We got word the launch time would slip 25 minutes. SpaceX chose the perfect time to fly, with a crystal-clear sky hued by the rising Sun.

First, you see it

I was at Starbase for all four previous Starship test flights and have covered more than 300 rocket launches in person. I’ve been privileged to witness a lot of history, but after hundreds of launches, some of the novelty has worn off. Don’t get me wrong—I still feel a lump in my throat every time I see a rocket leave the planet. Prelaunch jitters are a real thing. But I no longer view every launch as a newsworthy event.

October 13 was different.

Those prelaunch anxieties were present as SpaceX counted off the final seconds to liftoff. First, you see it. A blast of orange flashed from the bottom of the gleaming, frosty rocket filled with super-cold propellants. Then, the 11 million-pound vehicle began a glacial climb from the launch pad. About 20 seconds later, the rumble from the rocket’s 33 methane-fueled engines reached our location.

Our viewing platform shook from the vibrations for over a minute as Starship and the Super Heavy booster soared into the stratosphere. Two-and-a-half minutes into the flight, the rocket was just a point of bluish-white light as it accelerated east over the Gulf of Mexico.

Another burst of orange encircled the rocket during the so-called hot-staging maneuver, when the Starship upper stage lit its engines at the moment the Super Heavy booster detached to begin the return to Starbase. Flying at the edge of space more than 300,000 feet over the Gulf, the booster flipped around and fired its engines to cancel out its downrange velocity and propel itself back toward the coastline.

The engines shut down, and the booster plunged deeper into the atmosphere. Eventually, the booster transformed from a dot in the sky back into the shape of a rocket as it approached Starbase at supersonic speed. The rocket’s velocity became more evident as it got closer. For a few moments, my viewing angle made it look like the rocket—bigger than the fuselage of a 747 jumbo jet—was coming right at me.

The descending booster zoomed through the contrail cloud it left behind during launch, then reappeared into clear air. With the naked eye, I could see a glow inside the rocket’s engine bay as it dived toward the launch pad, presumably from heat generated as the vehicle slammed into ever-denser air on the way back to Earth. This phenomenon made the rocket resemble a lit cigar.

Finally, the rocket hit the brakes by igniting 13 of its 33 engines, then downshifted to three engines for the final maneuver to slide in between the launch tower’s two catch arms. Like balancing a pencil on the tip of your finger, the Raptor engines vectored their thrust to steady the booster, which, for a moment, appeared to be floating next to the tower.

The Super Heavy booster, more than 20 stories tall, rights itself over the launch pad in Texas, moments before two mechanical arms grabbed it in mid-air.

Credit: Stephen Clark/Ars Technica

The Super Heavy booster, more than 20 stories tall, rights itself over the launch pad in Texas, moments before two mechanical arms grabbed it in mid-air. Credit: Stephen Clark/Ars Technica

A double-clap sonic boom jolted spectators from their slack-jawed awe. Only then could we hear the roar from the start of the Super Heavy booster’s landing burn. This sound reached us just as the rocket settled into the grasp of the launch tower, with its so-called catch fittings coming into contact with the metallic beams of the catch arms.

The engines switched off, and there it was. Many of the spectators lucky enough to be there jumped up and down with joy, hugged their friends, or let out an ecstatic yell. I snapped a few final photos and returned to his laptop, grinning, speechless, and started wondering how I could put this all into words.

Once the smoke cleared, at first glance, the rocket looked as good as new. There was no soot on the outside of the booster, as it is on the Falcon 9 rocket after returning from space. This is because the Super Heavy booster and Starship use cleaner-burning methane fuel instead of kerosene.

Elon Musk, SpaceX’s founder and CEO, later said the outer ring of engine nozzles on the bottom of the rocket showed signs of heating damage. This, he said, would be “easily addressed.”

What’s not so easy to address is how SpaceX can top this. A landing on the Moon or Mars? Sure, but realistically, those milestones are years off. There’s something that’ll happen before then.

Sometime soon, SpaceX will try to catch a Starship back at the launch pad at the end of an orbital flight. This will be an extraordinarily difficult feat, far exceeding the challenge of catching the Super Heavy booster.

Super Heavy only reaches a fraction of the altitude and speed of the Starship upper stage, and while the booster’s size and the catch method add degrees of difficulty, the rocket follows much the same up-and-down flight profile pioneered by the Falcon 9. Starship, on the other hand, will reenter the atmosphere from orbital velocity, streak through the sky surrounded by super-heated plasma, then shift itself into a horizontal orientation for a final descent SpaceX likes to call the “belly flop.”

In the last few seconds, Starship will reignite three of its engines, flip itself vertical, and come down for a precision landing. SpaceX demonstrated the ship could do this on the test flight last week, when the vehicle made a controlled on-target splashdown in the Indian Ocean after traveling halfway around the world from Texas.

If everything goes according to plan, SpaceX could be ready to try to catch a Starship for real next year. Stay tuned.

Photo of Stephen Clark

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

After seeing hundreds of launches, SpaceX’s rocket catch was a new thrill Read More »

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Starship is about to launch on its fifth flight, and this time there’s a catch

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“We landed with half a centimeter accuracy in the ocean, so we think we have a reasonable chance to come back to the tower,” Gerstenmaier said.

Launch playbook

The Starship upper stage, meanwhile, will light six Raptor engines to accelerate to nearly orbital velocity, giving the rocket enough oomph to coast halfway around the world before falling back into the atmosphere over the Indian Ocean.

This is a similar trajectory to the one Starship flew in June, when it survived a fiery reentry for a controlled splashdown. It was the first time SpaceX completed an end-to-end Starship test flight. Onboard cameras showed fragments of the heat shield falling off Starship when it reentered the atmosphere, but the vehicle maintained control and reignited its Raptor engines, flipped from a horizontal to a vertical orientation, and settled into the Indian Ocean northwest of Australia.

After analyzing the results from the June mission, SpaceX engineers decided to rework the heat shield for the next Starship vehicle. The company said its technicians spent more than 12,000 hours replacing the entire thermal protection system with new-generation tiles, a backup ablative layer, and additional protections between the ship’s flap structures.

From start to finish, Sunday’s test flight should last approximately 1 hour and 5 minutes.

This diagram illustrates the path the Super Heavy booster will take to return to the launch pad in Texas, while the Starship upper stage continues the climb to space.

Credit: SpaceX

This diagram illustrates the path the Super Heavy booster will take to return to the launch pad in Texas, while the Starship upper stage continues the climb to space. Credit: SpaceX

Here’s an overview of the key events during Sunday’s flight:

• T+00: 00: 02: Liftoff

• T+00: 01: 02: Maximum aerodynamic pressure

• T+00: 02: 33: Super Heavy MECO (most engines cut off)

• T+00: 02: 41: Stage separation and ignition of Starship engines

• T+00: 02: 48: Super Heavy boost-back burn start

• T+00: 03: 41: Super Heavy boost-back burn shutdown

• T+00: 03: 43: Hot staging ring jettison

• T+00: 06: 08: Super Heavy is subsonic

• T+00: 06: 33: Super Heavy landing burn start

• T+00: 06: 56: Super Heavy landing burn shutdown and catch attempt

• T+00: 08: 27: Starship engine cutoff

• T+00: 48: 03: Starship reentry

• T+01: 02: 34: Starship is transonic

• T+01: 03: 43: Starship is subsonic

• T+01: 05: 15: Starship landing flip

• T+01: 05: 20: Starship landing burn

• T+01: 05: 34: Starship splashdown in Indian Ocean

SpaceX officials hope to see Starship’s heat shield stay intact as it dips into the atmosphere, when temperatures will reach 2,600° Fahrenheit (1,430° Celsius), hot enough to melt aluminum, the metal used to build many launch vehicles. SpaceX chose stainless steel for Starship because it strong at cryogenic temperatures—the rocket consumes super-cold fuel and oxidizer—and has a higher melting point than aluminum.

Starship is about to launch on its fifth flight, and this time there’s a catch Read More »

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SpaceX’s next Starship launch—and first catch—could happen this weekend

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The FAA is still reviewing plans for the fifth Starship test flight, but could approve it soon.

SpaceX’s fully-stacked Super Heavy booster and Starship upper stage at the company’s launch site in South Texas. Credit: SpaceX

We may not have to wait as long as we thought for the next test flight of SpaceX’s Starship rocket.

The world’s most powerful launcher could fly again as soon as Sunday, SpaceX says, assuming the Federal Aviation Administration grants approval. The last public statement released from the FAA suggested the agency didn’t expect to determine whether to approve a commercial launch license for SpaceX’s next Starship test flight before late November.

There’s some optimism at SpaceX that the FAA might issue a launch license much sooner, perhaps in time for Starship to fly this weekend. The launch window Sunday opens at 7 am CDT (8 am EDT; 12: 00 UTC), about a half-hour before sunrise at SpaceX’s Starbase launch site in South Texas.

“The fifth flight test of Starship will aim to take another step towards full and rapid reusability,” SpaceX wrote in an update posted on its website. “The primary objectives will be attempting the first ever return to launch site and catch of the Super Heavy booster and another Starship reentry and landing burn, aiming for an on-target splashdown of Starship in the Indian Ocean.”

Stacked together, the Super Heavy booster, or first stage, and the Starship upper stage stand nearly 400 feet (121 meters) tall. The Super Heavy booster—itself bigger than the fuselage of a 747 jumbo jet—will vertically return to the Starbase launch pad guided by cold gas thrusters, aerodynamic grid fins, and propulsive maneuvers with its methane-fueled Raptor engines.

Once the booster’s Raptor engines slow it to a hover, mechanical arms on the launch pad tower will close in around the rocket and capture it in midair. If you’re into rockets, or just want to spice up your morning, you don’t want to miss this. We’ll have a more detailed story before the launch previewing the timeline of events.

Safety measures

The FAA has been reviewing SpaceX’s plans to bring the Super Heavy booster back to the Starbase launch pad for months.

Most recently, the agency’s review of SpaceX’s proposed flight plan has focused on the effects of the rocket’s sonic boom as it comes back to Earth. The FAA and other agencies are also studying how a disposable section of the booster, called a hot-staging ring, might impact the environment when it falls into the sea just offshore from Starbase, located on the Gulf Coast east of Brownsville.

During SpaceX’s most recent Starship test flight in June, the Super Heavy booster completed a control descent to a predetermined location in the Gulf of Mexico, giving engineers enough confidence to try a return to the launch site on the next mission.

SpaceX protested the length of time the FAA said it needed to review the flight plan, after the federal regulator previously told SpaceX it expected to make a license determination in September.

“Unfortunately, instead of focusing resources on critical safety analysis and collaborating on rational safeguards to protect both the public and the environment, the licensing process has been repeatedly derailed by issues ranging from the frivolous to the patently absurd,” SpaceX wrote in a statement last month.

“I think the two-month delay is necessary to comply with the launch requirements, and I think that’s an important part of safety culture,” said Michael Whitaker, the FAA administrator, in a congressional hearing September 24.

The FAA is responsible for ensuring commercial space launches do not endanger the public and comport with the US government’s national security and foreign policy interests. Earlier this year, SpaceX was also fined by the Texas Commission on Environmental Quality and the Environmental Protection Agency for alleged violations of environmental regulations related to the launch pad’s water system, which cools a steel flame deflector under the 33 main engines of Starship’s Super Heavy booster.

Ars contacted an FAA spokesperson Tuesday about the status of the agency’s review of the Starship launch license request, but did not receive a response.

Artist’s illustration of SpaceX’s Super Heavy booster coming in for a catch by the launch pad’s mechanical arms.

Credit: SpaceX

Artist’s illustration of SpaceX’s Super Heavy booster coming in for a catch by the launch pad’s mechanical arms. Credit: SpaceX

Teams at Starbase completed two partial propellant loading tests on the fully stacked Starship rocket in recent days. Early Tuesday, SpaceX tested the water deluge system at the launch pad two times, presumably to check the system’s ability to activate minutes apart to protect the pad during launch and recovery of the Super Heavy booster.

Later Tuesday, SpaceX removed the Starship upper stage from the Super Heavy booster. This is required for technicians to perform one of the final tasks to prepare for launch—installing the rocket’s flight termination system, which would destroy the rocket if it veers off course.

“We accept no compromises when it comes to ensuring the safety of the public and our team, and the return will only be attempted if conditions are right,” SpaceX said.

SpaceX outlined additional human-in-the-loop safety criteria for the upcoming Starship flight. SpaceX launches are typically fully automated from liftoff through the end of the mission.

“Thousands of distinct vehicle and pad criteria must be met prior to a return and catch attempt of the Super Heavy booster, which will require healthy systems on the booster and tower and a manual command from the mission’s flight director,” SpaceX wrote. “If this command is not sent prior to the completion of the boostback burn, or if automated health checks show unacceptable conditions with Super Heavy or the tower, the booster will default to a trajectory that takes it to a landing burn and soft splashdown in the Gulf of Mexico.”

Recovering the Super Heavy booster back at the launch pad is critical for SpaceX’s ambition to rapidly reuse the rocket. Eventually, SpaceX will also recover and reuse the Starship portion of the rocket, but for now, the company is sticking to water landings for the ship.

Extensive upgrades

SpaceX teams in Texas have beefed up the launch tower and catch arms in the last few months, working around the clock to add structural stiffeners and test the arms’ load-carrying capability.

“Extensive upgrades ahead of this flight test have been made to hardware and software across Super Heavy, Starship, and the launch and catch tower infrastructure at Starbase,” SpaceX said. “SpaceX engineers have spent years preparing and months testing for the booster catch attempt, with technicians pouring tens of thousands of hours into building the infrastructure to maximize our chances for success.”

It will take about seven minutes for the Super Heavy booster to climb to the edge of space, separate from the Starship upper stage, and return to Starbase for recovery. While the booster comes back to the ground, Starship will fire its six engines to accelerate to near orbital velocity, fast enough to complete a half-lap around Earth before gravity pulls it toward an atmospheric reentry over the Indian Ocean.

This is a similar trajectory to the one Starship flew in June, when it survived a fiery reentry for a controlled splashdown. It was the first time SpaceX completed an end-to-end Starship test flight.

After analyzing the results from the June mission, SpaceX engineers decided to rework the heat shield for the next Starship vehicle. The company said its technicians spent more than 12,000 hours replacing the entire thermal protection system with new-generation tiles, a backup ablative layer, and additional protections between the ship’s flap structures.

Onboard cameras showed fragments of the heat shield falling off Starship when it reentered the atmosphere in June.

“This massive effort, along with updates to the ship’s operations and software for reentry and landing burn, will look to improve upon the previous flight and bring Starship to a soft splashdown at the target area in the Indian Ocean,” SpaceX said.

Starship won’t attempt to reignite its Raptor engines in space on the upcoming test flight. This is one of the next things SpaceX needs to demonstrate for Starship to soar into a stable orbit around Earth and guide itself to a controlled reentry to ensure it doesn’t become stranded in space or fall over a populated area. SpaceX wanted to relight a Raptor engine in space on Starship’s third test flight in March, but aborted the maneuver.

The business end of Starship’s Super Heavy booster during a launch in March.

Credit: SpaceX

The business end of Starship’s Super Heavy booster during a launch in March. Credit: SpaceX

Once Starship is able to sustain a flight in low-Earth orbit, SpaceX can begin experiments with in-space refueling, which is required to support future Starship flights to the Moon, Mars, and other deep space destinations. Starship is a foundational element of SpaceX’s vision to create a settlement on the red planet.

NASA has a contract with SpaceX to develop a human-rated Starship to land astronauts on the Moon as part of the agency’s Artemis program. NASA’s official schedule calls for the first Artemis crew landing in September 2026. Realistically, the landing will probably happen later in the decade because the Starship lander and new lunar spacesuits likely won’t be ready in two years.

Starships will likely fly many dozens of times, if not more, before NASA approves it to land astronauts on the Moon. These flights will test the rocket’s ability to repeatedly and reliably fly to space and back, transfer cryogenic propellants in orbit, and safely land on the lunar surface without a crew.

As we’ve seen with SpaceX’s workhorse Falcon 9 rocket, rapidly reusing elements of a launch vehicle can enable rapid-fire launch cadences. Validating the architecture for recovering the Super Heavy booster directly on the launch pad, as SpaceX intends to do quite soon, is a key step on this path.

Photo of Stephen Clark

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

SpaceX’s next Starship launch—and first catch—could happen this weekend Read More »

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The war of words between SpaceX and the FAA keeps escalating

Commercial space, Federal Aviation Administration, launch, Science, Space, spacex, starship, texas / /
Elon Musk, SpaceX's founder and CEO, has called for the resignation of the FAA administrator.

Enlarge / Elon Musk, SpaceX’s founder and CEO, has called for the resignation of the FAA administrator.

The clash between SpaceX and the Federal Aviation Administration escalated this week, with Elon Musk calling for the head of the federal regulator to resign after he defended the FAA’s oversight and fines levied against the commercial launch company.

The FAA has said it doesn’t expect to determine whether to approve a launch license for SpaceX’s next Starship test flight until late November, two months later than the agency previously communicated to Musk’s launch company. Federal regulators are reviewing changes to the rocket’s trajectory necessary for SpaceX to bring Starship’s giant reusable Super Heavy booster back to the launch pad in South Texas. This will be the fifth full-scale test flight of Starship but the first time SpaceX attempts such a maneuver on the program.

This week, SpaceX assembled the full Starship rocket on its launch pad at the company’s Starbase facility near Brownsville, Texas. “Starship stacked for Flight 5 and ready for launch, pending regulatory approval,” SpaceX posted on X.

Apart from the Starship regulatory reviews, the FAA last week announced it is proposing more than $633,000 in fines on SpaceX due to alleged violations of the company’s launch license associated with two flights of the company’s Falcon 9 rocket from Florida. It is rare for the FAA’s commercial spaceflight division to fine launch companies.

Michael Whitaker, the FAA’s administrator, discussed the agency’s ongoing environmental and safety reviews of SpaceX’s Starship rocket in a hearing before a congressional subcommittee in Washington Tuesday. During the hearing, which primarily focused on the FAA’s oversight of Boeing’s commercial airplane business, one lawmaker asked Whitaker the FAA’s relationship with SpaceX.

Public interest

“I think safety is in the public interest and that’s our primary focus,” said Michael Whitaker, the FAA administrator, in response to questions from Rep. Kevin Kiley, a California Republican. “It’s the only tool we have to get compliance on safety matters,” he said, referring to the FAA’s fines.

The stainless-steel Super Heavy booster is larger than a Boeing 747 jumbo jet. SpaceX says the flight path to return the first stage of the rocket to land will mean a “slightly larger area could experience a sonic boom,” and a stainless-steel ring that jettisons from the top of the booster, called the hot-staging ring, will fall in a different location in the Gulf of Mexico just offshore from the rocket’s launch and landing site.

The FAA, which is primarily charged with ensuring rocket launches don’t endanger the public, is consulting with other agencies on these matters, along with issues involving SpaceX’s discharge of water into the environment around the Starship launch pad in Texas. The pad uses water to cool a steel flame deflector that sits under the 33 main engines of Starship’s Super Heavy booster.

SpaceX says fines levied against it this year by the Texas Commission on Environmental Quality (TCEQ) and the Environmental Protection Agency (EPA) related to the launch pad’s water system were “entirely tied to disagreements over paperwork” and not any dumping of pollutants into the environment around the Starship launch site.

SpaceX installed the water-cooled flame deflector under the Starship launch mount after the engine exhaust rocket’s first test flight excavated a large hole in the ground. Gwynne Shotwell, SpaceX’s president and chief operating officer, summed up her view of the issue in a hearing with Texas legislators in Austin on Tuesday.

“To protect that from happening again, we built this kind of upside-down shower head to basically cool the flame as the rocket was lifting off,” she said. “That was licensed and permitted by TCEQ. The EPA came in afterwards and didn’t like the license or the permit that we had for that, and wanted to turn it into a federal permit, which we are working on now.”

“We work very closely with organizations such as TCEQ,” Shotwell said. “You may have read a little bit of nonsense in the papers recently about that, but we’re working quite well with them.”

The war of words between SpaceX and the FAA keeps escalating Read More »

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Sparks are flying day and night as SpaceX preps Starship pad to catch a rocket

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Pretty much every day for the last couple of weeks, workers wielding welding guns and torches have climbed onto SpaceX’s Starship launch pad in South Texas to make last-minute upgrades ahead of the next test flight of the world’s largest rocket.

Livestreams of the launch site provided by LabPadre and NASASpaceflight.com have shown sparks raining down two mechanical arms extending from the side of the Starship launch tower at SpaceX’s Starbase launch site on the Gulf Coast east of Brownsville, Texas. We are publishing several views here of the welding activity with the permission of LabPadre, which runs a YouTube page with multiple live views of Starbase.

If SpaceX has its way on the next flight of Starship, these arms will close together to capture the first-stage booster, called Super Heavy, as it descends back to Earth and slows to a hover over the launch pad.

This method of rocket recovery is remarkably different from how SpaceX lands its smaller Falcon 9 booster, which has landing legs to touch down on offshore ocean-going platforms or at concrete sites onshore. Catching the rocket with large metallic arms—sometimes called “mechazilla arms” or “chopsticks”—would reduce the turnaround time to reuse the booster and simplify its design, according to SpaceX.

SpaceX has launched the nearly 400-foot-tall (121 meter) Starship rocket four times, most recently in June, when the Super Heavy booster, itself roughly 233 feet (71 meters) tall, made a pinpoint splashdown in the Gulf of Mexico just off the coast of Starbase.

On the same flight in June, the Starship upper stage flew halfway around the world and reentered the atmosphere over the Indian Ocean. The ship survived reentry and splashed down in the open ocean northwest of Australia. This flight was the first time either part of the Starship rocket made it back to Earth intact, but SpaceX didn’t recover the booster or the ship.

Doubling up

Lessons learned from the June test flight prompted SpaceX to replace thousands of heat shield tiles on the Starship vehicle for the next mission. While the ship survived reentry in June, onboard camera views showed numerous tiles ripped away from the vehicle. Last month, SpaceX test-fired engines on the booster and ship assigned to the next launch.

On August 8, SpaceX said Starship and Super Heavy were “ready to fly, pending regulatory approval” from the Federal Aviation Administration. An FAA spokesperson said the agency is evaluating SpaceX’s proposed flight profile for the next Starship test flight, when SpaceX wants to try catching the booster on the pad. This will be the first time SpaceX will try to bring the stainless-steel Super Heavy booster, as long as and wider than a Boeing 747 jumbo jet, back to a landing on land.

Sparks fly at Starbase as welders work overnight at the Starship launch pad.

Enlarge / Sparks fly at Starbase as welders work overnight at the Starship launch pad.

While the rocket appears to be ready to fly, SpaceX officials clearly believe there’s more work to do on the launch pad. Closer views revealed welders are installing structural supports, or doublers, to certain parts of the catch arms. Elsewhere on the arms, workers were seen removing and adding other unknown pieces of hardware. SpaceX hasn’t specified exactly what kind of work teams are doing on the Starship launch pad in Texas, but the focus is on beefing up hardware necessary for catching the Super Heavy booster.

All of this work is occurring during the hottest part of the year in South Texas. On most days this month, afternoon temperatures have soared into the mid-to-upper 90s Fahrenheit, with sticky humidity. A lot of the work on the catch arms has occurred at night, when temperatures drop into the lower 80s.

It’s unclear how long it will take for the FAA to approve a license for SpaceX to launch and recover the rocket on the next test flight or when SpaceX will complete the upgrades on the launch pad. Elon Musk, SpaceX’s founder and CEO, suggested earlier this month that the flight could take off by the end of August, but the condition of the launch pad and remaining tests indicate a launch is still probably at least a couple of weeks away.

Once workers finish up their tasks upgrading the pad and clearing scaffolding and cranes from the area, SpaceX will likely stack the Super Heavy booster and Starship upper stage and fill them with propellants during a full countdown rehearsal, as it has before each previous Starship launch.

Musk has signaled several times that the company will try to catch the Super Heavy booster on the next flight, which will also accelerate the Starship upper stage to nearly orbital velocity for another reentry demonstration over the Indian Ocean. Last month, SpaceX released a video teasing a catch of the booster on the next Starship flight, showing the rocket returning to Starbase with its Raptor engines firing.

Meanwhile, SpaceX has stacked a second Starship launch tower next to the existing launch pad in Texas. The company still has a lot of work to do to outfit the second launch pad before it is ready to support a Starship flight, but SpaceX could have it ready for activation sometime next year. SpaceX also plans two Starship launch pads at Cape Canaveral, Florida. All these sites will allow SpaceX to launch Starships more often. The company is also finishing a sprawling factory near the Starship factory in South Texas, just a couple of miles inland from the launch pads there.

Sparks are flying day and night as SpaceX preps Starship pad to catch a rocket Read More »

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Rocket Report: ULA is losing engineers; SpaceX is launching every two days

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Every other day —

The first missions of Stoke Space’s reusable Nova rocket will fly in expendable mode.

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A Falcon 9 booster returns to landing at Cape Canaveral Space Force Station following a launch Thursday with two WorldView Earth observation satellites for Maxar.

Enlarge / A Falcon 9 booster returns to landing at Cape Canaveral Space Force Station following a launch Thursday with two WorldView Earth observation satellites for Maxar.

Welcome to Edition 7.07 of the Rocket Report! SpaceX has not missed a beat since the Federal Aviation Administration gave the company a green light to resume Falcon 9 launches after a failure last month. In 19 days, SpaceX has launched 10 flights of the Falcon 9 rocket, taking advantage of all three of its Falcon 9 launch pads. This is a remarkable cadence in its own right, but even though it’s a small sample size, it is especially impressive right out of the gate after the rocket’s grounding.

As always, we welcome reader submissions. If you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

A quick turnaround for Rocket Lab. Rocket Lab launched its 52nd Electron rocket on August 11 from its private spaceport on Mahia Peninsula in New Zealand, Space News reports. The company’s light-class Electron rocket deployed a small radar imaging satellite into a mid-inclination orbit for Capella Space. This was the shortest turnaround between two Rocket Lab missions from its primary launch base in New Zealand, coming less than nine days after an Electron rocket took off from the same pad with a radar imaging satellite for the Japanese company Synspective. Capella’s Acadia 3 satellite was originally supposed to launch in July, but Capella requested a delay to perform more testing of its spacecraft. Rocket Lab swapped its place in the Electron launch sequence and launched the Synspective mission first.

Now, silence at the launch pad … Rocket Lab hailed the swap as an example of the flexibility provided by Electron, as well as the ability to deliver payloads to specific orbits that are not feasible with rideshare missions, according to Space News. For this tailored launch service, Rocket Lab charges a premium launch price over the price of launching a small payload on a SpaceX rideshare mission. However, SpaceX’s rideshare launches gobble up the lion’s share of small satellites within Rocket Lab’s addressable market. On Friday, a Falcon 9 rocket is slated to launch 116 small payloads into polar orbit. Rocket Lab, meanwhile, projects just one more launch before the end of September and expects to perform 15 to 18 Electron launches this year, a record for the company but well short of the 22 it forecasted earlier in the year. Rocket Lab says customer readiness is the reason it will be far short of projections.

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Defense contractors teaming up on solid rockets. Lockheed Martin and General Dynamics are joining forces to kickstart solid rocket motor production, announcing a strategic teaming agreement today that could see new motors roll off the line as early as 2025, Breaking Defense reports. The new agreement could position a third vendor to enter into the ailing solid rocket motor industrial base, which currently only includes L3Harris subsidiary Aerojet Rocketdyne and Northrop Grumman in the United States. Both companies have struggled to meet demands from weapons makers like Lockheed and RTX, which are in desperate need of solid rocket motors for products such as Javelin or the PAC-3 missiles used by the Patriot missile defense system.

Pressure from startups … Demand for solid rocket motors has skyrocketed since Russia’s invasion of Ukraine as the United States and its partners sought to backfill stocks of weapons like Javelin and Stinger, as well as provide motors to meet growing needs in the space domain. Although General Dynamics has kept its interest in the solid rocket motor market quiet until now, several defense tech startups, such as Ursa Major Technologies, Anduril, and X-Bow Systems, have announced plans to enter the market. (submitted by Ken the Bin)

Going polar with crew. SpaceX will fly the first human spaceflight over the Earth’s poles, possibly before the end of this year, Ars reports. The private Crew Dragon mission will be led by a Chinese-born cryptocurrency entrepreneur named Chun Wang, and he will be joined by a polar explorer, a roboticist, and a filmmaker whom he has befriended in recent years. The “Fram2” mission, named after the Norwegian research ship Fram, will launch into a polar corridor from SpaceX’s launch facilities in Florida and fly directly over the north and south poles. The three- to five-day mission is being timed to fly over Antarctica near the summer solstice in the Southern Hemisphere, to afford maximum lighting.

Wang’s inclination is Wang’s prerogative … Wang told Ars he wanted to try something new, and flying a polar mission aligned with his interests in cold places on Earth. He’s paying the way on a commercial basis, and SpaceX in recent years has demonstrated it can launch satellites into polar orbit from Cape Canaveral, Florida, something no one had done in more than 50 years. The highest-inclination flight ever by a human spacecraft was the Soviet Vostok 6 mission in 1963 when Valentina Tereshkova’s spacecraft reached 65.1 degrees. Now, Fram2 will fly repeatedly and directly over the poles.

Rocket Report: ULA is losing engineers; SpaceX is launching every two days Read More »

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Rocket Report: Falcon 9 is back; Starship could be recovered off Australia

atlas v, european space agency, falcon 9, launch, NASA, rocket report, Science, Space, spacex, starship, united launch alliance / /

Starship down under —

Elon Musk doesn’t expect the next Starship test flight to occur before late August.

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Welcome to Edition 7.05 of the Rocket Report! The Federal Aviation Administration grounded SpaceX’s Falcon 9 rocket for 15 days after a rare failure of its upper stage earlier this month. The FAA gave the green light for Falcon 9 to return to flight July 25, and within a couple of days, SpaceX successfully launched three missions from three launch pads. There’s a lot on Falcon 9’s to-do list, so we expect SpaceX to quickly return to form with several flights per week.

As always, we welcome reader submissions. If you don’t want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets as well as a quick look ahead at the next three launches on the calendar.

Big delay for a reusable rocket testbed. The French space agency, CNES, has revealed that the inaugural test flight of its Callisto reusable rocket demonstrator will not take place until late 2025 or early 2026, European Spaceflight reports. CNES unveiled an updated website for the Callisto rocket program earlier this month, showing the test rocket has been delayed from a debut launch later this year to until late 2025 or early 2026. The Callisto rocket is designed to test techniques and technologies required for reusable rockets, such as vertical takeoff and vertical landing, with suborbital flights from the Guiana Space Center in South America.

Cooperative action … Callisto, which stands for Cooperative Action Leading to Launcher Innovation in Stage Toss-back Operations, is a joint project between CNES, German space agency DLR, and JAXA, the Japanese space agency. It will stand 14 meters (46 feet) tall and weigh about 4 metric tons (8,800 pounds), with an engine supplied by Japan. Callisto is one of several test projects in Europe aiming to pave the way for a future reusable rocket. (submitted by EllPeaTea and Ken the Bin)

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Small step for Themis. Another European project established to demonstrate reusable rocket tech is making slow progress toward a first flight. The Themis project, funded by the European Space Agency, is similar in purpose to the Callisto testbed discussed above. This week, the German aerospace manufacturing company MT Aerospace announced it has begun testing a demonstrator of the landing legs that will be used aboard the Themis reusable booster, European Spaceflight reports. The landing legs for Themis are made of carbon fiber-reinforced plastic composites, and the initial test demonstrated good deployment and showed it would withstand the impact energy of landing.

Also delayed … Like Callisto, Themis is facing delays in getting to the launch pad. ArianeGroup, the ESA-selected Themis prime contractor, had been expected to conduct an initial hop test of the demonstrator before the end of 2024. However, officials have announced the initial hop tests won’t happen until sometime next year. The Themis booster is intended to eventually become the first stage booster for an orbital-class partially reusable rocket being developed by MaiaSpace, a subsidiary of ArianeGroup. (submitted by Ken the Bin)

Falcon 9 is flying again. A SpaceX Falcon 9 rocket returned to flight on July 27, barely two weeks after an upper stage failure ended a streak of more than 300 consecutive successful launches, Ars reports. By some measures this was an extremely routine mission—it was, after all, SpaceX’s 73rd launch of this calendar year. And like many other Falcon 9 launches this year, the “Starlink 10-9” mission carried 23 of the broadband Internet satellites into orbit. However, after a rare failure earlier this month, this particular Falcon 9 rocket was making a return-to-flight for the company and attempting to get the world’s most active booster back into service.

Best part is no part … The Falcon 9 successfully deployed its payload of Starlink satellites about an hour after lifting off from NASA’s Kennedy Space Center in Florida. Later in the weekend, SpaceX launched two more Starlink missions on Falcon 9 rockets from Florida and California, notching three flights in less than 28 hours. The launch failure on the previous Falcon 9 launch was caused by a liquid oxygen leak on the upper stage, which led to a “hard start” on the upper stage engine when it attempted to reignite in flight. Engineers and technicians were quickly able to pinpoint the cause of the leak, a crack in a “sense line” for a pressure sensor attached to the vehicle’s liquid oxygen system.

Atlas V’s NSSL era is over. United Launch Alliance delivered a classified US military payload to orbit Tuesday for the last time with an Atlas V rocket, ending the Pentagon’s use of Russian rocket engines as national security missions transition to all-American launchers, Ars reports. This was the 101st launch of an Atlas V rocket since its debut in 2002, and the 58th and final Atlas V mission with a US national security payload since 2007. The Atlas V is powered by an RD-180 main engine made in Russia, and with a little prodding from SpaceX (via a lawsuit) and Congress, the Pentagon started making moves to end its reliance on the RD-180 a decade ago.

Other options available … The RD-180 never failed on a National Security Space Launch (NSSL) mission using the Atlas V rocket, but its use became politically untenable after Russia’s annexation of Crimea in 2014, which predated Russia’s full-scale invasion of Ukraine eight years later. SpaceX began launching US military missions in 2018, and ULA debuted its new Vulcan rocket in January. Assuming a successful second test flight of Vulcan in September, ULA’s next-generation rocket has a good shot at launching its first national security mission by the end of the year. The Space Force’s policy is to maintain at least two independent launch vehicles capable of flying military payloads into orbit. Vulcan and SpaceX’s Falcon rocket family fulfill that requirement, so the military no longer needs the Atlas V. However, 15 more Atlas V rockets remain in ULA’s inventory for future commercial flights.

Crackdown at the Cape. While this week’s landmark launch of the Atlas V rocket is worthy of celebration, there’s a new ULA policy that deserves ridicule, Ars reports. Many of the spectacular photos of rocket launches shared on social media come from independent photographers, who often make little to no money working for an established media organization. Instead, they rely on sales of prints to recoup at least some of their expenses for gas, food, and camera equipment needed to capture these images, which often serve as free publicity for launch providers like ULA. Last month, ULA announced it will no longer permit these photographers to set up remote cameras at their launch pads if they sell their images independently. This new policy was in place for the Atlas V launch from Cape Canaveral, Florida, on Tuesday morning.

But why? … “ULA will periodically confirm editorial publication for media participating in remote camera placement,” ULA stated in an email distributed to photographers last month. “If publication does not occur, or photos are sold outside of editorial purposes, privileges to place remote cameras may be revoked.” To the photographers who spend many hours preparing their equipment, waiting to set up and remove cameras, and persevering through scrubs and more, it seemed like a harsh judgment. And nobody knows why it happened. ULA has offered no public comment about the new policy, and the company did not respond to questions from Ars about the agreement.

Astroscale achieves a first in orbit. There are more than 2,000 mostly intact dead rockets circling the Earth, but until this year, no one ever launched a satellite to go see what one looked like after many years of tumbling around the planet, Ars reports. A Japanese company named Astroscale launched a small satellite in February to chase down the derelict upper stage from a Japanese H-IIA rocket. Astroscale’s ADRAS-J spacecraft arrived near the H-IIA upper stage in April, and the company announced this week that its satellite has now completed two 360-degree fly-arounds of the rocket. This is the first time a satellite has maneuvered around an actual piece of space junk, and it offers an unprecedented snapshot of how an abandoned rocket holds up to 15 years in the harsh environment of space.

Prepping for the future … Astroscale’s ADRAS-J mission is partially funded by the Japan Aerospace Exploration Agency (JAXA). Astroscale and JAXA also have a contract for a follow-up mission named ADRAS-J2, which will attempt to link up with the same H-IIA rocket and steer it on a trajectory to burn up in Earth’s atmosphere. This would be the first demonstration of active debris removal, a concept pursued by Astroscale and other companies to help clear space junk out of low-Earth orbit.

An update on Ariane 6. The European Space Agency has released its first update on the results from the first flight of the Ariane 6 rocket since its launch July 9. Europe’s new flagship rocket had a mostly successful inaugural test flight. Its first stage, solid rocket boosters, and upper stage performed as expected for the first phase of the flight, delivering eight small satellites into an on-target orbit. The launch pad at the Guiana Space Center in South America also held up to the violent environment of launch, ESA said.

Still investigating … However, the final phase of the mission didn’t go according to plan. The upper stage’s Vinci engine was supposed to reignite for a third time on the test flight to deorbit the rocket, which would have released two small reentry capsules on technology demonstration missions to test heat shield technologies. This didn’t happen. An Auxiliary Propulsion Unit, which is a small engine to provide additional bursts of thrust and pressurize the upper stage’s propellant tanks, shut down shortly after startup ahead of the third burn of the primary Vinci engine. “This meant the Vinci engine’s third boost could not take place,” ESA said. “Analysis of the APU’s behavior is ongoing and further information will be made available as soon as possible, while the next task force update is expected in September.” (submitted by Ken the Bin)

Room to grow at Starbase. SpaceX has since launched Starship four times from its launch site in South Texas, known as Starbase, and is planning a fifth launch within the next two months, Ars reports. However, as it continues to test Starship and make plans for regular flights, SpaceX will need a higher flight rate. This is especially true as the company is unlikely to activate additional launch pads for Starship in Florida until at least 2026. To that end, SpaceX has asked the FAA for permission for up to 25 flights a year from South Texas, as well as the capability to land both the Starship upper stage and Super Heavy booster stage back at the launch site.

The answer is probably yes … On Monday, the FAA signaled that it is inclined to grant this request. The agency released a draft assessment indicating that its extensive 2022 analysis of Starship launch activities on the environment, wildlife, local communities, and more was sufficient to account for SpaceX’s proposal for more launches. There is more to do for this conclusion to become official, including public meetings and a public comment period this month.

SpaceX eyes Australia. SpaceX is in talks with US and Australian officials to land and recover one of its Starship rockets off Australia’s coast, a possible first step toward a bigger presence for Elon Musk’s company in the region as the two countries bolster security ties, Reuters reports. At the end of SpaceX’s fourth Starship test flight in June, the rocket made a controlled splashdown in the Indian Ocean hundreds of miles off the northwest coast of Australia. The discussions now underway are focused on the possibility of towing a future Starship vehicle from its splashdown point in the ocean to a port in Australia, where SpaceX engineers could inspect it and learn more about how it performed.

Eventually, it’ll come back to land … On the next Starship flight, currently planned for no earlier than late August, SpaceX plans to attempt to recover Starship’s giant Super Heavy booster using catch arms on the launch pad tower in Texas. On Sunday, Elon Musk told SpaceX and Tesla enthusiasts at an event called the “X Takeover” that it will take a few more flights for engineers to get comfortable returning the Starship itself to a landing onshore. “We want to be really confident that the ship heat shield is super robust and lands at the exact right location,” he said. “So before we try to bring the ship back to the launch site, we probably want to have at least three successful landings of the ship [at sea].” (submitted by Ken the Bin)

Next three launches

August 2: Electron | “Owl for One, One for Owl” | Mahia Peninsula, New Zealand | 16: 39 UTC

August 3: Falcon 9 | NG-21 | Cape Canaveral Space Force Station, Florida | 15: 28 UTC

August 4: Falcon 9 | Starlink 11-1 | Vandenberg Space Force Base, California | 07: 00 UTC

Listing image by SpaceX

Rocket Report: Falcon 9 is back; Starship could be recovered off Australia Read More »

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Although it’s not final, SpaceX just got good news from the FAA on Starbase

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A superfluity of Starships —

“SpaceX has dramatically reduced the duration of operations.”

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The Super Heavy booster for Flight 5 of Starship undergoes a static fire test earlier this month.

Enlarge / The Super Heavy booster for Flight 5 of Starship undergoes a static fire test earlier this month.

SpaceX

After SpaceX decided to launch orbital missions of its Starship rocket from Texas about five years ago, the company had to undergo a federal environmental review of the site to ensure it was safe to do so.

As a part of this multi-year process, the Federal Aviation Administration completed a Final Programmatic Environmental Assessment in June 2022. Following that review, SpaceX received approval to conduct up to five Starship launches from South Texas annually.

SpaceX has since launched Starship four times from its launch site in South Texas, known as Starbase, and is planning a fifth launch within the next two months. However, as it continues to test Starship and make plans for regular flights, SpaceX will need a higher flight rate. This is especially true as the company is unlikely to activate additional launch pads for Starship in Florida until at least 2026.

To that end, SpaceX has asked the FAA for permission for up to 25 flights a year from South Texas, as well as the capability to land both the Starship upper stage and Super Heavy booster stage back at the launch site. On Monday, the FAA signaled that it is inclined to grant permission for this.

A solid step for SpaceX

The federal agency released a 154-page “Draft Tiered Environmental Assessment” for an increased cadence of Starship launches from South Texas. In conclusion, the document stated: “The FAA has concluded that the modification of SpaceX’s existing vehicle operator license for Starship/Super Heavy operations conforms to the prior environmental documentation, consistent with the data contained in the 2022 PEA, that there are no significant environmental changes, and all pertinent conditions and requirements of the prior approval have been met or will be met in the current action.”

Effectively, then, the FAA is saying that its extensive 2022 analysis of Starship activities on the environment, wildlife, local communities, and more was sufficient to account for SpaceX’s proposed modifications.

This is not the final word. In the parlance of the FAA, this is just milestone No. 3 in the seven-part process that results in a final determination. Up next are a series of public meetings, both in person in South Texas and online, during the month of August. The public comment period will then close on August 29.

Although the process is not yet complete, this document indicates the current thinking of federal regulators, who appear inclined to be permissive of an increased scope of activities. This is no small finding, as SpaceX is not only seeking to launch more rockets, but also to land them back at Starbase, as well as significantly increase the thrust of the vehicles.

SpaceX asked the FAA—which has federal authority to regulate such activities in order to protect life and property on the ground—for 25 annual launches and 50 total landings, 25 for Starship and 25 for Super Heavy. The company is also seeking to conduct up to 90 seconds of daytime Starship static fire tests, and 70 seconds of daytime Super Heavy static fire tests a year.

Bigger rockets, more propellant

SpaceX also is developing more powerful variants of its rocket, and the launch of these vehicles would also be permitted. Under the environmental assessment completed in 2022, SpaceX’s plans called for a 50-meter-tall Starship and a 71-meter-tall Super Heavy booster stage. Its upgraded Starship would be 70 meters tall, atop an 80-meter boost stage, for a total stack height of 150 meters.

The company is contemplating a far greater thrust for each of the vehicles, more than doubling Starship’s thrust to 6.5 million pounds and substantially increasing Super Heavy’s thrust to 2.3 million pounds. A bigger, more powerful launch system will require more than 1,500 tons of liquid oxygen and methane propellant.

Upgrade plans for Starship and Super Heavy.

Enlarge / Upgrade plans for Starship and Super Heavy.

FAA

One change that may have helped sell this increased flight rate is that SpaceX is not seeking any additional increases in road closures of State Highway 4, which leads from Brownsville to Boca Chica Beach. This road passes right by the launch site and is closed during launches and static fire tests. SpaceX has moved much of its pre-launch testing to a new location nearby that does not require road closures.

“SpaceX has dramatically reduced the duration of operations and the number of access restrictions through engineering analysis and improvements,” the FAA draft document states. “There has been an 85% reduction in the number of access restrictions from Flight 1 to Flight 3. Additionally, a majority of the testing that required access restrictions has been moved to SpaceX’s Massey’s Test Site, approximately 4 miles away.”

After the public comment period, the FAA will prepare a final environmental assessment and render a decision on the request.

Although it’s not final, SpaceX just got good news from the FAA on Starbase Read More »