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At $250 million, top AI salaries dwarf those of the Manhattan Project and the Space Race

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A 24 year-old AI researcher will earn 327x what Oppenheimer made while developing the atomic bomb.

Silicon Valley’s AI talent war just reached a compensation milestone that makes even the most legendary scientific achievements of the past look financially modest. When Meta recently offered AI researcher Matt Deitke $250 million over four years (an average of $62.5 million per year)—with potentially $100 million in the first year alone—it shattered every historical precedent for scientific and technical compensation we can find on record. That includes salaries during the development of major scientific milestones of the 20th century.

The New York Times reported that Deitke had cofounded a startup called Vercept and previously led the development of Molmo, a multimodal AI system, at the Allen Institute for Artificial Intelligence. His expertise in systems that juggle images, sounds, and text—exactly the kind of technology Meta wants to build—made him a prime target for recruitment. But he’s not alone: Meta CEO Mark Zuckerberg reportedly also offered an unnamed AI engineer $1 billion in compensation to be paid out over several years. What’s going on?

These astronomical sums reflect what tech companies believe is at stake: a race to create artificial general intelligence (AGI) or superintelligence—machines capable of performing intellectual tasks at or beyond the human level. Meta, Google, OpenAI, and others are betting that whoever achieves this breakthrough first could dominate markets worth trillions. Whether this vision is realistic or merely Silicon Valley hype, it’s driving compensation to unprecedented levels.

To put these salaries in a historical perspective: J. Robert Oppenheimer, who led the Manhattan Project that ended World War II, earned approximately $10,000 per year in 1943. Adjusted for inflation using the US Government’s CPI Inflation Calculator, that’s about $190,865 in today’s dollars—roughly what a senior software engineer makes today. The 24-year-old Deitke, who recently dropped out of a PhD program, will earn approximately 327 times what Oppenheimer made while developing the atomic bomb.

Many top athletes can’t compete with these numbers. The New York Times noted that Steph Curry’s most recent four-year contract with the Golden State Warriors was $35 million less than Deitke’s Meta deal (although soccer superstar Cristiano Ronaldo will make $275 million this year as the highest-paid professional athlete in the world).  The comparison prompted observers to call this an “NBA-style” talent market—except the AI researchers are making more than NBA stars.

Racing toward “superintelligence”

Mark Zuckerberg recently told investors that Meta plans to continue throwing money at AI talent “because we have conviction that superintelligence is going to improve every aspect of what we do.” In a recent open letter, he described superintelligent AI as technology that would “begin an exciting new era of individual empowerment,” despite declining to define what superintelligence actually is.

This vision explains why companies treat AI researchers like irreplaceable assets rather than well-compensated professionals. If these companies are correct, the first to achieve artificial general intelligence or superintelligence won’t just have a better product—they’ll have technology that could invent endless new products or automate away millions of knowledge-worker jobs and transform the global economy. The company that controls that kind of technology could become the richest company in history by far.

So perhaps it’s not surprising that even the highest salaries of employees from the early tech era pale in comparison to today’s AI researcher salaries. Thomas Watson Sr., IBM’s legendary CEO, received $517,221 in 1941—the third-highest salary in America at the time (about $11.8 million in 2025 dollars). The modern AI researcher’s package represents more than five times Watson’s peak compensation, despite Watson building one of the 20th century’s most dominant technology companies.

The contrast becomes even more stark when considering the collaborative nature of past scientific achievements. During Bell Labs’ golden age of innovation—when researchers developed the transistor, information theory, and other foundational technologies—the lab’s director made about 12 times what the lowest-paid worker earned.  Meanwhile, Claude Shannon, who created information theory at Bell Labs in 1948, worked on a standard professional salary while creating the mathematical foundation for all modern communication.

The “Traitorous Eight” who left William Shockley to found Fairchild Semiconductor—the company that essentially birthed Silicon Valley—split ownership of just 800 shares out of 1,325 total when they started. Their seed funding of $1.38 million (about $16.1 million today) for the entire company is a fraction of what a single AI researcher now commands.

Even Space Race salaries were far cheaper

The Apollo program offers another striking comparison. Neil Armstrong, the first human to walk on the moon, earned about $27,000 annually—roughly $244,639 in today’s money. His crewmates Buzz Aldrin and Michael Collins made even less, earning the equivalent of $168,737 and $155,373, respectively, in today’s dollars. Current NASA astronauts earn between $104,898 and $161,141 per year. Meta’s AI researcher will make more in three days than Armstrong made in a year for taking “one giant leap for mankind.”

The engineers who designed the rockets and mission control systems for the Apollo program also earned modest salaries by modern standards. A 1970 NASA technical report provides a window into these earnings by analyzing salary data for the entire engineering profession. The report, which used data from the Engineering Manpower Commission, noted that these industry-wide salary curves corresponded directly to the government’s General Schedule (GS) pay scale on which NASA’s own employees were paid.

According to a chart in the 1970 report, a newly graduated engineer in 1966 started with an annual salary of between $8,500 and $10,000 (about $84,622 to $99,555 today). A typical engineer with a decade of experience earned around $17,000 annually ($169,244 today). Even the most elite, top-performing engineers with 20 years of experience peaked at a salary of around $278,000 per year in today’s dollars—a sum that a top AI researcher like Deitke can now earn in just a few days.

Why the AI talent market is different

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This isn’t the first time technical talent has commanded premium prices. In 2012, after three University of Toronto academics published AI research, they auctioned themselves to Google for $44 million (about $62.6 million in today’s dollars). By 2014, a Microsoft executive was comparing AI researcher salaries to NFL quarterback contracts. But today’s numbers dwarf even those precedents.

Several factors explain this unprecedented compensation explosion. We’re in a new realm of industrial wealth concentration unseen since the Gilded Age of the late 19th century. Unlike previous scientific endeavors, today’s AI race features multiple companies with trillion-dollar valuations competing for an extremely limited talent pool. Only a small number of researchers have the specific expertise needed to work on the most capable AI systems, particularly in areas like multimodal AI, which Deitke specializes in. And AI hype is currently off the charts as “the next big thing” in technology.

The economics also differ fundamentally from past projects. The Manhattan Project cost $1.9 billion total (about $34.4 billion adjusted for inflation), while Meta alone plans to spend tens of billions annually on AI infrastructure. For a company approaching a $2 trillion market cap, the potential payoff from achieving AGI first dwarfs Deitke’s compensation package.

One executive put it bluntly to The New York Times: “If I’m Zuck and I’m spending $80 billion in one year on capital expenditures alone, is it worth kicking in another $5 billion or more to acquire a truly world-class team to bring the company to the next level? The answer is obviously yes.”

Young researchers maintain private chat groups on Slack and Discord to share offer details and negotiation strategies. Some hire unofficial agents. Companies not only offer massive cash and stock packages but also computing resources—the NYT reported that some potential hires were told they would be allotted 30,000 GPUs, the specialized chips that power AI development.

Also, tech companies believe they’re engaged in an arms race where the winner could reshape civilization. Unlike the Manhattan Project or Apollo program, which had specific, limited goals, the race for artificial general intelligence ostensibly has no ceiling. A machine that can match human intelligence could theoretically improve itself, creating what researchers call an “intelligence explosion” that could potentially offer cascading discoveries—if it actually comes to pass.

Whether these companies are building humanity’s ultimate labor replacement technology or merely chasing hype remains an open question, but we’ve certainly traveled a long way from the $8 per diem that Neil Armstrong received for his moon mission—about $70.51 in today’s dollars—before deductions for the “accommodations” NASA provided on the spacecraft. After Deitke accepted Meta’s offer, Vercept co-founder Kiana Ehsani joked on social media, “We look forward to joining Matt on his private island next year.”

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Benj Edwards is Ars Technica’s Senior AI Reporter and founder of the site’s dedicated AI beat in 2022. He’s also a tech historian with almost two decades of experience. In his free time, he writes and records music, collects vintage computers, and enjoys nature. He lives in Raleigh, NC.

At $250 million, top AI salaries dwarf those of the Manhattan Project and the Space Race Read More »

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The curious case of Russia’s charm offensive with NASA this week

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Although NASA and its counterpart in Russia, Roscosmos, continue to work together on a daily basis, the leaders of the two organizations have not held face-to-face meetings since the middle of the first Trump administration, back in October 2018.

A lot has changed in the nearly eight years since then, including the Russian invasion of Ukraine, the rocky departure of Roscosmos leader Dmitry Rogozin in 2022 who was subsequently dispatched to the front lines of the war, several changes in NASA leadership, and more.

This drought in high-level meetings was finally broken this week when the relatively new leader of Roscosmos, Roscosmos Director General Dmitry Bakanov, visited the United States to view the launch of the Crew-11 mission from Florida, which included cosmonaut Oleg Platonov. Bakanov has also met with some of NASA’s human spaceflight leaders at Johnson Space Center in Houston.

Notably, NASA has provided almost no coverage of the visit. However, the state-operated Russian news service, TASS, has published multiple updates. For example, on Thursday at Kennedy Space Center, TASS reported that Bakanov and Acting NASA Administrator Sean Duffy discussed the future of the International Space Station.

Future of ISS partnership

“The conversation went quite well,” Bakanov is quoted as saying. “We agreed to continue using the ISS until 2028. It’s important that the new NASA chief confirmed this. We will work on the deorbiting process until 2030.”

A separate TASS report also quoted Duffy as saying NASA and Roscosmos should continue to work together despite high geopolitical tensions on Earth.

“What’s unique is we might find disagreement with conflict here, which we have,” Duffy said. “We have wild disagreement with the Russians on Ukraine, but what you see is we find points of agreement and points of partnership, which is what we have with the International Space Station and Russians, and so through hard times, we don’t throw those relationships away. We’re going to continue to work on the problems that we have here, but we’re going to continue to build alliances and partnerships and friendships as humanity continues to advance in space exploration.”

The curious case of Russia’s charm offensive with NASA this week Read More »

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Lawmakers writing NASA’s budget want a cheaper upper stage for the SLS rocket

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Eliminating the Block 1B upgrade now would save NASA at least $500 million per year.

Artist’s illustration of the Boeing-developed Exploration Upper Stage, with four hydrogen-fueled RL10 engines. Credit: NASA

Not surprisingly, Congress is pushing back against the Trump administration’s proposal to cancel the Space Launch System, the behemoth rocket NASA has developed to propel astronauts back to the Moon.

Spending bills making their way through both houses of Congress reject the White House’s plan to wind down the SLS rocket after two more launches, but the text of a draft budget recently released by the House Appropriations Committee suggests an openness to making some major changes to the program.

The next SLS flight, called Artemis II, is scheduled to lift off early next year to send a crew of four astronauts around the far side of the Moon. Artemis III will follow a few years later on a mission to attempt a crew lunar landing at the Moon’s south pole. These missions follow Artemis I, a successful unpiloted test flight in 2022.

After Artemis III, the official policy of the Trump administration is to terminate the SLS program, along with the Orion crew capsule designed to launch on top of the rocket. The White House also proposed canceling NASA’s Gateway, a mini-space station to be placed in orbit around the Moon. NASA would instead procure commercial launches and commercial spacecraft to ferry astronauts between the Earth and the Moon, while focusing the agency’s long-term gaze toward Mars.

CYA EUS?

House and Senate appropriations bills would preserve SLS, Orion, and the Gateway. However, the House version of NASA’s budget has an interesting paragraph directing NASA to explore cheaper, faster options for a new SLS upper stage.

NASA has tasked Boeing, which also builds SLS core stages, to develop an Exploration Upper Stage for debut on the Artemis IV mission, the fourth flight of the Space Launch System. This new upper stage would have large propellant tanks and carry four engines instead of the single engine used on the rocket’s interim upper stage, which NASA is using for the first three SLS flights.

The House version of NASA’s fiscal year 2026 budget raises questions about the long-term future of the Exploration Upper Stage. In one section of the bill, House lawmakers would direct NASA to “evaluate alternatives to the current Exploration Upper Stage (EUS) design for SLS.” The committee members wrote the evaluation should focus on reducing development and production costs, shortening the schedule, and maintaining the SLS rocket’s lift capability.

“NASA should also evaluate how alternative designs could support the long-term evolution of SLS and broader exploration goals beyond low-Earth orbit,” the lawmakers wrote. “NASA is directed to assess various propulsion systems, stage configurations, infrastructure compatibility, commercial and international collaboration opportunities, and the cost and schedule impacts of each alternative.”

The SLS rocket is expensive, projected to cost at least $2.5 billion per launch, not counting development costs or expenses related to the Orion spacecraft and the ground systems required to launch it at Kennedy Space Center in Florida. Those figures bring the total cost of an Artemis mission using SLS and Orion to more than $4 billion, according to NASA’s inspector general.

NASA’s Block 1B version of the SLS rocket will be substantially larger than Block 1. Credit: NASA

The EUS is likewise an expensive undertaking. Last year, NASA’s inspector general reported that the new upper stage’s development costs had ballooned from $962 million to $2.8 billion, and the Boeing-led project had been delayed more than six years. The version of the SLS rocket with the EUS, known as Block 1B, is supposed to deliver a 40 percent increase in performance over the Block 1 configuration used on the first three Space Launch System flights. Overall, NASA’s inspector general projected Block 1B’s development costs to total $5.7 billion.

Eliminating the Block 1B upgrade now would save NASA at least $500 million per year, and perhaps more if NASA could also end work on a costly mobile launch tower specifically designed to support SLS Block 1B missions.

NASA can’t go back to the interim upper stage, which is based on the design of the upper stage that flew on United Launch Alliance’s (ULA’s) now-retired Delta IV Heavy rocket. ULA has shut down its Delta production line, so there’s no way to build any more. What ULA does have is a new high-energy upper stage called Centaur V. This upper stage is sized for ULA’s new Vulcan rocket, with more capability than the interim upper stage but with lower performance than the larger EUS.

A season of compromise, maybe

Ars’ Eric Berger wrote last year about the possibility of flying the Centaur V upper stage on SLS missions.

Incorporating the Centaur V wouldn’t maintain the SLS rocket’s lift capability, as the House committee calls for in its appropriations bill. The primary reason for improving the rocket’s performance is to give SLS Block 1B enough oomph to carry “co-manifested” payloads, meaning it can launch an Orion crew capsule and equipment for NASA’s Gateway lunar space station on a single flight. The lunar Gateway is also teed up for cancellation in Trump’s budget proposal, but both congressional appropriations bills would save it, too. If the Gateway escapes cancellation, there are ways to launch its modules on commercial rockets.

Blue Origin also has an upper stage that could conceivably fly on the Space Launch System. But the second stage for Blue Origin’s New Glenn rocket would be a more challenging match for SLS for several reasons, chiefly its 7-meter (23-foot) diameter—too wide to be a drop-in replacement for the interim upper stage used on Block 1. ULA’s Centaur V is much closer in size to the existing upper stage.

The House budget bill has passed a key subcommittee vote but won’t receive a vote from the full appropriations committee until after Congress’s August recess. A markup of the bill by the House Appropriations Committee scheduled for Thursday was postponed after Speaker Mike Johnson announced an early start to the recess this week.

Ars reported last week on the broad strokes of how the House and Senate appropriations bills would affect NASA. Since then, members of the House Appropriations Committee released the text of the report attached to their version of the NASA budget. The report, which includes the paragraph on the Exploration Upper Stage, provides policy guidance and more detailed direction on where NASA should spend its money.

The House’s draft budget includes $2.5 billion for the Space Launch System, close to this year’s funding level and $500 million more than the Trump administration’s request for the next fiscal year, which begins October 1. The budget would continue development of SLS Block 1B and the Exploration Upper Stage while NASA completes a six-month study of alternatives.

The report attached to the Senate appropriations bill for NASA has no specific instructions regarding the Exploration Upper Stage. But like the House bill, the Senate’s draft budget directs NASA to continue ordering spares and long-lead parts for SLS and Orion missions beyond Artemis III. Both versions of the NASA budget require the agency to continue with SLS and Orion until a suitable commercial, human-rated rocket and crew vehicle are proven ready for service.

In a further indication of Congress’ position on the SLS and Orion programs, lawmakers set aside more than $4 billion for the procurement of SLS rockets for the Artemis IV and Artemis V rockets in the reconciliation bill signed into law by President Donald Trump earlier this month.

Congress must pass a series of federal appropriations bills by October 1, when funding for the current fiscal year runs out. If Congress doesn’t act by then, it could pass a continuing resolution to maintain funding at levels close to this year’s budget or face a government shutdown.

Lawmakers will reconvene in Washington, DC, in early September in hopes of finishing work on the fiscal year 2026 budget. The section of the budget that includes NASA still must go through a markup hearing by the House Appropriations Committee and pass floor votes in the House and Senate. Then the two chambers will have to come to a compromise on the differences in their appropriations bill. Only then can the budget be put to another vote in each chamber and go to the White House for Trump’s signature.

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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.

Lawmakers writing NASA’s budget want a cheaper upper stage for the SLS rocket Read More »

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SpaceX launches a pair of NASA satellites to probe the origins of space weather

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“This is going to really help us understand how to predict space weather in the magnetosphere.”

This artist’s illustration of the Earth’s magnetosphere shows the solar wind (left) streaming from the Sun, and then most of it being blocked by Earth’s magnetic field. The magnetic field lines seen here fold in toward Earth’s surface at the poles, creating polar cusps. Credit: NASA/Goddard Space Flight Center

Two NASA satellites rocketed into orbit from California aboard a SpaceX Falcon 9 rocket Wednesday, commencing a $170 million mission to study a phenomenon of space physics that has eluded researchers since the dawn of the Space Age.

The twin spacecraft are part of the NASA-funded TRACERS mission, which will spend at least a year measuring plasma conditions in narrow regions of Earth’s magnetic field known as polar cusps. As the name suggests, these regions are located over the poles. They play an important but poorly understood role in creating colorful auroras as plasma streaming out from the Sun interacts with the magnetic field surrounding Earth.

The same process drives geomagnetic storms capable of disrupting GPS navigation, radio communications, electrical grids, and satellite operations. These outbursts are usually triggered by solar flares or coronal mass ejections that send blobs of plasma out into the Solar System. If one of these flows happens to be aimed at Earth, we are treated with auroras but vulnerable to the storm’s harmful effects.

For example, an extreme geomagnetic storm last year degraded GPS navigation signals, resulting in more than $500 million in economic losses in the agriculture sector as farms temporarily suspended spring planting. In 2022, a period of elevated solar activity contributed to the loss of 40 SpaceX Starlink satellites.

“Understanding our Sun and the space weather it produces is more important to us here on Earth, I think, than most realize,” said Joe Westlake, director of NASA’s heliophysics division.

NASA’s two TRACERS satellites launched Wednesday aboard a SpaceX Falcon 9 rocket from Vandenberg Space Force Base, California. Credit: SpaceX

The launch of TRACERS was delayed 24 hours after a regional power outage disrupted air traffic control over the Pacific Ocean near the Falcon 9 launch site on California’s Central Coast, according to the Federal Aviation Administration. SpaceX called off the countdown Tuesday less than a minute before liftoff, then rescheduled the flight for Wednesday.

TRACERS, short for Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites, will study a process known as magnetic reconnection. As particles in the solar wind head out into the Solar System at up to 1 million mph, they bring along pieces of the Sun’s magnetic field. When the solar wind reaches our neighborhood, it begins interacting with Earth’s magnetic field.

The high-energy collision breaks and reconnects magnetic field lines, flinging solar wind particles across Earth’s magnetosphere at speeds that can approach the speed of light. Earth’s field draws some of these particles into the polar cusps, down toward the upper atmosphere. This is what creates dazzling auroral light shows and potentially damaging geomagnetic storms.

Over our heads

But scientists still aren’t sure how it all works, despite the fact that it’s happening right over our heads, within the reach of countless satellites in low-Earth orbit. But a single spacecraft won’t do the job. Scientists need at least two spacecraft, each positioned in bespoke polar orbits and specially instrumented to measure magnetic fields, electric fields, electrons, and ions.

That’s because magnetic reconnection is a dynamic process, and a single satellite would provide just a snapshot of conditions over the polar cusps every 90 minutes. By the time the satellite comes back around on another orbit, conditions will have changed, but scientists wouldn’t know how or why, according to David Miles, principal investigator for the TRACERS mission at the University of Iowa.

“You can’t tell, is that because the system itself is changing?” Miles said. “Is that because this magnetic reconnection, the coupling process, is moving around? Is it turning on and off, and if it’s turning on and off, how quickly can it do it? Those are fundamental things that we need to understand… how the solar wind arriving at the Earth does or doesn’t transfer energy to the Earth system, which has this downstream effect of space weather.”

This is why the tandem part of the TRACERS name is important. The novel part of this mission is it features two identical spacecraft, each about the size of a washing machine flying at an altitude of 367 miles (590 kilometers). Over the course of the next few weeks, the TRACERS satellites will drift into a formation with one trailing the other by about two minutes as they zip around the world at nearly five miles per second. This positioning will allow the satellites to sample the polar cusps one right after the other, instead of forcing scientists to wait another 90 minutes for a data refresh.

With TRACERS, scientists hope to pick apart smaller, fast-moving changes with each satellite pass. Within a year, TRACERS should collect 3,000 measurements of magnetic reconnections, a sample size large enough to start identifying why some space weather events evolve differently than others.

“Not only will it get a global picture of reconnection in the magnetosphere, but it’s also going to be able to statistically study how reconnection depends on the state of the solar wind,” said John Dorelli, TRACERS mission scientist at NASA’s Goddard Space Flight Center. “This is going to really help us understand how to predict space weather in the magnetosphere.”

One of the two TRACERS satellites undergoes launch preparations at Millennium Space Systems, the spacecraft’s manufacturer. Credit: Millennium Space Systems

“If we can understand these various different situations, whether it happens suddenly if you have one particular kind of event, or it happens in lots of different places, then we have a better way to model that and say, ‘Ah, here’s the likelihood of seeing a certain kind of effect that would affect humans,'” said Craig Kletzing, the principal investigator who led the TRACERS science team until his death in 2023.

There is broader knowledge to be gained with a mission like TRACERS. Magnetic reconnection is ubiquitous throughout the Universe, and the same physical processes produce solar flares and coronal mass ejections from the Sun.

Hitchhiking to orbit

Several other satellites shared the ride to space with TRACERS on Wednesday.

These secondary payloads included a NASA-sponsored mission named PExT, a small technology demonstration satellite carrying an experimental communications package capable of connecting with three different networks: NASA’s government-owned Tracking and Data Relay Satellites (TDRS) and commercial satellite networks owned by SES and Viasat.

What’s unique about the Polylingual Experimental Terminal, or PExT, is its ability to roam across multiple satellite relay networks. The International Space Station and other satellites in low-Earth orbit currently connect to controllers on the ground through NASA’s TDRS satellites. But NASA will retire its TDRS satellites in the 2030s and begin purchasing data relay services using commercial satellite networks.

The space agency expects to have multiple data relay providers, so radios on future NASA satellites must be flexible enough to switch between networks mid-mission. PExT is a pathfinder for these future missions.

Another NASA-funded tech demo named Athena EPIC was also aboard the Falcon 9 rocket. Led by NASA’s Langley Research Center, this mission uses a scalable satellite platform developed by a company named NovaWurks, using building blocks to piece together everything a spacecraft needs to operate in space.

Athena EPIC hosts a single science instrument to measure how much energy Earth radiates into space, an important data point for climate research. But the mission’s real goal is to showcase how an adaptable satellite design, such as this one using NovaWurks’ building block approach, might be useful for future NASA missions.

A handful of other payloads rounded out the payload list for Wednesday’s launch. They included REAL, a NASA-funded CubeSat project to investigate the Van Allen radiation belts and space weather, and LIDE, an experimental 5G communications satellite backed by the European Space Agency. Five commercial spacecraft from the Australian company Skykraft also launched to join a constellation of small satellites to provide tracking and voice communications between air traffic controllers and aircraft over remote parts of the world.

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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.

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Nearly 3,000 people are leaving NASA, and this director is one of them

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You can add another name to the thousands of employees leaving NASA as the Trump administration primes the space agency for a 25 percent budget cut.

On Monday, NASA announced that Makenzie Lystrup will leave her post as director of the Goddard Space Flight Center on Friday, August 1. Lystrup has held the top job at Goddard since April 2023, overseeing a staff of more than 8,000 civil servants and contractor employees and a budget last year of about $4.7 billion.

These figures make Goddard the largest of NASA’s 10 field centers primarily devoted to scientific research and development of robotic space missions, with a budget and workforce comparable to NASA’s human spaceflight centers in Texas, Florida, and Alabama. Officials at Goddard manage the James Webb and Hubble telescopes in space, and Goddard engineers are assembling the Nancy Grace Roman Space Telescope, another flagship observatory scheduled for launch late next year.

“We’re grateful to Makenzie for her leadership at NASA Goddard for more than two years, including her work to inspire a Golden Age of explorers, scientists, and engineers,” Vanessa Wyche, NASA’s acting associate administrator, said in a statement.

Cynthia Simmons, Goddard’s deputy director, will take over as acting chief at the space center. Simmons started work at Goddard as a contract engineer 25 years ago.

Lystrup came to NASA from Ball Aerospace, now part of BAE Systems, where she managed the company’s work on civilian space projects for NASA and other federal agencies. Before joining Ball Aerospace, Lystrup earned a doctorate in astrophysics from University College London and conducted research as a planetary astronomer.

Formal dissent

The announcement of Lystrup’s departure from Goddard came hours after the release of an open letter to NASA’s interim administrator, Transportation Secretary Sean Duffy, signed by hundreds of current and former agency employees. The letter, titled the “The Voyager Declaration,” identifies what the signatories call “recent policies that have or threaten to waste public resources, compromise human safety, weaken national security, and undermine the core NASA mission.”

Nearly 3,000 people are leaving NASA, and this director is one of them Read More »

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After a partly successful test flight, European firm eyes space station mission

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Last month, the parachutes on Hélène Huby’s small spacecraft failed to deploy, and the vehicle and its cargo crashed into the ocean on Earth.

It was both a success and a failure.

The success was that after Huby founded The Exploration Company in Europe, she managed to move nimbly with the “Mission Possible” spacecraft such that it cost less than $25 million to build and reached space in less than three years. The vehicle ticked off a number of successes in spaceflight before making a controlled descent through the atmosphere.

But at 26 km above the planet, as the spacecraft slowed to Mach one, The Exploration Company lost contact. Huby was not sure how this loss would be received in Europe, where failures in spaceflight have not been traditionally well-tolerated.

“What was interesting is the feedback I got in Europe,” Huby said in an interview this week at the company’s offices in Houston. “The German Space Agency, the French space agency, the European Space Agency said, OK, that’s a great achievement. For the time and money we spent, performing 80 percent of that mission was a good investment.”

No drop tests

After the spacecraft was lost on June 24, the company established an independent investigation team. Huby said it is “99 percent” confirmed there was a problem with the deployment of the parachutes, either the drogue chutes or the main parachutes. The fault was not with the provider of the parachutes themselves, US-based Airborne Systems, but the company’s mechanism, she said.

To save time and money, The Exploration Company did not conduct any drop tests. Such a campaign would have added millions of dollars to a program that was trying to be lean, plus a year of schedule to a mission attempting to move fast.

“We made a mistake, basically, to underestimate the risks,” she said. In retrospect, Huby added, the company could have done more testing on the ground.

Now the firm faces a big decision: How to proceed from here. One option is building another small spacecraft, similar to Mission Possible, for testing purposes. But there is limited commonality in the parachute system for this vehicle and the larger Nyx spacecraft the company is building for operational missions. So if the Mission Possible parachutes were to work, that would not guarantee success for Nyx.

After a partly successful test flight, European firm eyes space station mission Read More »

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As White House talks about impounding NASA funding, Congress takes the threat seriously

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This year, given the recent action on the budget measures, it is possible that Congress could pass Appropriations legislation for most of the federal government, including NASA before October 1.

Certainly there is motivation to do so, because the White House and its Office of Management and Budget, led by Russ Vought, has indicated that in absence of Appropriations legislation it is planning to take measures that would implement the Presidents Budget Request, which set significantly lower spending levels for NASA and other federal agencies.

For example, as Ars reported earlier this month, the principal investigators of NASA science missions that White House seeks to kill have been told to create termination plans that could be implemented within three months, beginning as soon as October 1.

Whether there is a continuing resolution, or shutdown, then, the White House appears likely to go to court to implement its spending priorities at federal agencies, including NASA.

Congress acknowledges the threat

This week the Ranking Members of House committee with oversight over NASA raised the alarm publicly about this in a letter to Sean Duffy, the Secretary of Transportation who was recently named interim administrator of NASA as well.

NASA appears to be acting in accordance with a fringe, extremist ideology emanating from the White House Office of Management and Budget that asserts a right to impound funds appropriated by Congress for the sake of executive branch priorities. Moreover, it now appears that the agency intends to implement funding cuts that were never enacted by Congress in order to “align” the agency’s present-day budget with the Trump Administration’s slash-and-burn proposed budget for the next fiscal year, with seemingly no concern for the devastation that will be caused by mass layoffs, widespread program terminations, and the possible closure of critical centers and facilities. These decisions are wrong, and they are not yours to make.

The letter reminds Duffy that Congress sets the budget, and federal agencies work toward those budget levels. However, the legislators say, NASA is moving ahead with funding freezes for various programs reducing employees across the agency. Approximately 2,700 employees have left the agency since the beginning of the Trump Administration.

As White House talks about impounding NASA funding, Congress takes the threat seriously Read More »

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The ISS is nearing retirement, so why is NASA still gung-ho about Starliner?

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NASA is doing all it can to ensure Boeing doesn’t abandon the Starliner program.

Boeing’s Starliner spacecraft atop a United Launch Alliance Atlas V rocket before a test flight in 2019. Credit: NASA/Joel Kowsky

Boeing’s Starliner spacecraft atop a United Launch Alliance Atlas V rocket before a test flight in 2019. Credit: NASA/Joel Kowsky

After so many delays, difficulties, and disappointments, you might be inclined to think that NASA wants to wash its hands of Boeing’s troubled Starliner spacecraft.

But that’s not the case.

The manager of NASA’s commercial crew program, Steve Stich, told reporters Thursday that Boeing and its propulsion supplier, Aerojet Rocketdyne, are moving forward with several changes to the Starliner spacecraft to resolve problems that bedeviled a test flight to the International Space Station (ISS) last year. These changes include new seals to plug helium leaks and thermal shunts and barriers to keep the spacecraft’s thrusters from overheating.

Boeing, now more than $2 billion in the hole to pay for all Starliner’s delays, is still more than a year away from executing on its multibillion-dollar NASA contract and beginning crew rotation flights to the ISS. But NASA officials say Boeing remains committed to Starliner.

“We really are working toward a flight as soon as early next year with Starliner, and then ultimately, our goal is to get into crew rotation flights with Starliner,” Stich said. “And those would start no earlier than the second crew rotation slot at the end of next year.”

That would be 11 years after Boeing officials anticipated the spacecraft would enter operational service for NASA when they announced the Starliner program in 2010.

Decision point

The next Starliner flight will probably transport only cargo to the ISS, not astronauts. But NASA hasn’t made any final decisions on the matter. The agency has enough crew rotation missions booked to fly on SpaceX’s Dragon spacecraft to cover the space station’s needs until well into 2027 or 2028.

“I think there are a lot of advantages, I would say, to fly the cargo flight first,” Stich said. “If we really look at the history of Starliner and Dragon, I think Dragon benefited a lot from having earlier [cargo] flights before the crew contract was let for the space station.”

One drawback of flying a Starliner cargo mission is that it will use up one of United Launch Alliance’s remaining Atlas V rockets currently earmarked for a future Starliner crew launch. That means Boeing would have to turn to another rocket to accomplish its full contract with NASA, which covers up to six crew missions.

While Boeing says Starliner can launch on several different rockets, the difficulty of adapting the spacecraft to a new launch vehicle, such as ULA’s Vulcan, shouldn’t be overlooked. Early in Starliner’s development, Boeing and ULA had to overcome an issue with unexpected aerodynamic loads discovered during wind tunnel testing. This prompted engineers to design an aerodynamic extension, or skirt, to go underneath the Starliner spacecraft on top of its Atlas V launcher.

Starliner has suffered delays from the beginning. A NASA budget crunch in the early 2010s pushed back the program about two years, but the rest of the schedule slips have largely fallen on Boeing’s shoulders. The setbacks included a fuel leak and fire during a critical ground test, parachute problems, a redesign to accommodate unanticipated aerodynamic forces, and a computer timing error that cut short Starliner’s first attempt to reach the space station in 2019.

This all culminated in the program’s first test flight with astronauts last summer. But after running into helium leaks and overheating thrusters, the mission ended with Starliner returning to Earth empty, while the spacecraft’s two crew members remained on the International Space Station until they could come home on a SpaceX Dragon spacecraft this year.

The outcome was a stinging disappointment for Boeing. Going into last year’s crew test flight, Boeing appeared to be on the cusp of joining SpaceX and finally earning revenue as one of NASA’s certified crew transportation providers for the ISS.

For several months, Boeing officials were strikingly silent on Starliner’s future. The company declined to release any statements on their long-term commitment to the program, and a Boeing program manager unexpectedly withdrew from a NASA press conference marking the end of the Starliner test flight last September.

Kelly Ortberg, Boeing’s president and CEO, testifies before the Senate Commerce, Science, and Transportation Committee on April 2, 2025, in Washington, DC. Credit: Win McNamee/Getty Images

But that has changed in the last few months. Kelly Ortberg, who took over as Boeing’s CEO last year, told CNBC in April that the company planned “more missions on Starliner” and said work to overcome the thruster issues the spacecraft encountered last year is “pretty straightforward.”

“We know what the problems were, and we’re making corrective actions,” Ortberg said. “So, we hope to do a few more flights here in the coming years.”

Task and purpose

NASA officials remain eager for Starliner to begin these regular crew rotation flights, even as its sole destination, the ISS, enters its sunset years. NASA and its international partners plan to decommission and scuttle the space station in 2030 and 2031, more than 30 years after the launch of the lab’s first module.

NASA’s desire to bring Starliner online has nothing to do with any performance issues with SpaceX, the agency’s other commercial crew provider. SpaceX has met or exceeded all of NASA’s expectations in 11 long-duration flights to the ISS with its Dragon spacecraft. Since its first crew flight in 2020, SpaceX has established a reliable cadence with Dragon missions serving NASA and private customers.

However, there are some questions about SpaceX’s long-term plans for the Dragon program, and those concerns didn’t suddenly spring up last month, when SpaceX founder and chief executive Elon Musk suggested on X that SpaceX would “immediately” begin winding down the Dragon program. The suggestion came as Musk and President Donald Trump exchanged threats and insults on social media amid a feud as the one-time political allies had a dramatic falling out months into Trump’s second term in the White House.

In a subsequent post on X, Musk quickly went back on his threat to soon end the Dragon program. SpaceX officials participating in NASA press conferences in the last few weeks have emphasized the company’s dedication to human spaceflight without specifically mentioning Dragon. SpaceX’s fifth and final human-rated Dragon capsule debuted last month on its first flight to the ISS.

“I would say we’re pretty committed to the space business,” said Bill Gerstenmaier, SpaceX’s vice president of build and flight reliability. “We’re committed to flying humans in space and doing it safely.”

There’s a kernel of truth behind Musk’s threat to decommission Dragon. Musk has long had an appetite to move on from the Dragon program and pivot more of SpaceX’s resources to Starship, the company’s massive next-generation rocket. Starship is envisioned by SpaceX as an eventual replacement for Dragon and the Falcon 9 launcher.

A high-resolution commercial Earth-imaging satellite owned by Maxar captured this view of the International Space Station on June 7, 2024, with Boeing’s Starliner capsule docked at the lab’s forward port (lower right). Credit: Satellite image (c) 2024 Maxar Technologies

NASA hopes commercial space stations can take over for the ISS after its retirement, but there’s no guarantee SpaceX will still be flying Dragon in the 2030s. This injects some uncertainty into plans for commercial space stations.

One possible scenario is that, sometime in the 2030s, the only options for transporting people to and from commercial space stations in low-Earth orbit could be Starliner and Starship. We’ll discuss the rationale for this scenario later in this story.

While the cost of a seat on SpaceX’s Dragon is well known, there’s low confidence in the price of a ticket to low-Earth orbit on Starliner or Starship. What’s more, some of the commercial outposts may be incompatible with Starship because of its enormous mass, which could overcome the ability of a relatively modest space station to control its orientation. NASA identified this as an issue with its Gateway mini-space station in development to fly in orbit around the Moon.

It’s impossible to predict when SpaceX will pull the plug on Dragon. The same goes with Boeing and Starliner. But NASA and other customers are interested in buying more Dragon flights.

If SpaceX can prove Starship is safe enough to launch and land with people onboard, Dragon’s days will be numbered. But Starship is likely at least several years from being human-rated for flights to and from low-Earth orbit. NASA’s contract with SpaceX to develop a version of Starship to land astronauts on the Moon won’t require the ship to be certified for launches and landings on Earth. In some ways, that’s a more onerous challenge than the Moon mission because of the perils of reentering Earth’s atmosphere, which Starship won’t need to endure for a lunar landing, and the ship’s lack of a launch abort system.

Once operational, Starship is designed to carry significantly more cargo and people than Falcon 9 and Dragon, but it’s anyone’s guess when it might be ready for crew missions. Until then, if SpaceX wants to have an operational human spaceflight program, it’s Dragon or bust.

For the International Space Station, it’s also Dragon or bust, at least until Boeing gets going. SpaceX’s capsules are the only US vehicles certified to fly to space with NASA astronauts, and any more US government payments to Russia to launch Americans on Soyuz missions would be politically unpalatable.

From the start of the commercial crew program, NASA sought two contractors providing their own means of flying to and from the ISS. The main argument for this “dissimilar redundancy” was to ensure NASA could still access the space station in the event of a launch failure or some other technical problem. The same argument could be made now that NASA needs two options to avoid being at the whim of one company’s decisions.

Stretching out

All of this is unfolding as the Trump administration seeks to slash funding for the International Space Station, cut back on the lab’s research program, and transition to “minimal safe operations” for the final few years of its life. Essentially, the space station would limp to the finish line, perhaps with a smaller crew than the seven-person staff living and working in it today.

At the end of this month, SpaceX is scheduled to launch the Crew-11 mission—the 12th Dragon crew mission for NASA and the 11th fully operational crew ferry flight to the ISS. Two Americans, one Japanese astronaut, and a Russian cosmonaut will ride to the station for a stay of at least six months.

NASA’s existing contract with SpaceX covers four more long-duration flights to the space station with Dragon, including the mission set to go on July 31.

One way NASA can save money in the space station’s budget is by simply flying fewer missions. Stich said Thursday that NASA is working with SpaceX to extend the Dragon spacecraft’s mission duration limit from seven months to eight months. The recertification of Dragon for a longer mission could be finished later this year, allowing NASA to extend Crew-11’s stay at the ISS if needed. Over time, longer stays mean fewer crew rotation missions.

“We can extend the mission in real-time as needed as we better understand… the appropriations process and what that means relative to the overall station manifest,” Stich said.

Boeing’s Starliner spacecraft backs away from the International Space Station on September 6, 2024, without its crew. Credit: NASA

Boeing’s fixed-price contract with NASA originally covered an unpiloted test flight of Starliner, a demonstration flight with astronauts, and then up to six operational missions delivering crews to the ISS. But NASA has only given Boeing the “Authority To Proceed” for three of its six potential operational Starliner missions. This milestone, known as ATP, is a decision point in contracting lingo where the customer—in this case, NASA—places a firm order for a deliverable. NASA has previously said it awards these task orders about two to three years prior to a mission’s launch.

If NASA opts to go to eight-month missions on the ISS with Dragon and Starliner, the agency’s firm orders for three Boeing missions and four more SpaceX crew flights would cover the agency’s needs into early 2030, not long before the final crew will depart the space station.

Stich said NASA officials are examining their options. These include whether NASA should book more crew missions with SpaceX, authorize Boeing to prepare for additional Starliner flights beyond the first three, or order no more flights at all.

“As we better understand the budget and better understand what’s in front of us, we’re working through that,” Stich said. “It’s really too early to speculate how many flights we’ll fly with each provider, SpaceX and Boeing.”

Planning for the 2030s

NASA officials also have an eye for what happens after 2030. The agency has partnered with commercial teams led by Axiom, Blue Origin, and Voyager Technologies on plans for privately owned space stations in low-Earth orbit to replace some of the research capabilities lost with the end of the ISS program.

The conventional wisdom goes that these new orbiting outposts will be less expensive to operate than the ISS, making them more attractive to commercial clients, ranging from pharmaceutical research and in-space manufacturing firms to thrill-seeking private space tourists. NASA, which seeks to maintain a human presence in low-Earth orbit as it turns toward the Moon and Mars, will initially be an anchor customer until the space stations build up more commercial demand.

These new space stations will need a way to receive cargo and visitors. NASA wants to preserve the existing commercial cargo and crew transport systems so they’re available for commercial space stations in the 2030s. Stich said NASA is looking at transferring the rights for any of the agency’s commercial crew missions that don’t fly to ISS over to the commercial space stations. Among NASA’s two commercial crew providers, it currently looks more likely that Boeing’s contract will have unused capacity than SpaceX’s when the ISS program ends.

This is a sweetener NASA could offer to its stable of private space station developers as they face other hurdles in getting their hardware off the ground. It’s unclear whether a business case exists to justify the expense of building and operating a commercial outpost in orbit or if the research and manufacturing customers that could use a private space station might find a cheaper option in robotic flying laboratories, such as those being developed by Varda Space Industries.

A rendering of Voyager’s Starlab space station. Credit: Voyager Space

NASA’s policies haven’t helped matters. Analysts say NASA’s financial support for private space station developers has lagged, and the agency’s fickle decision-making on when to retire the International Space Station has made private fundraising more difficult. It’s not a business for the faint-hearted. For example, Axiom has gone through several rounds of layoffs in the last year.

The White House’s budget request for fiscal year 2026 proposes a 25 percent cut to NASA’s overall budget, but the funding line for commercial space stations is an area marked for an increase. Still, there’s a decent chance that none of the proposed commercial outposts will be flying when the ISS crashes back to Earth. In that event, China would be the owner and operator of the only space station in orbit.

At least at first, transportation costs will be the largest expense for any company that builds and operates a privately owned space station. It costs NASA about 40 percent more each year to ferry astronauts and supplies to and from the ISS than it does to operate the space station. For a smaller commercial outpost with reduced operating costs, the gap will likely be even wider.

If Boeing can right the ship with Starliner and NASA offers a few prepaid crew missions to private space station developers, the money saved could help close someone’s business case and hasten the launch of a new era in commercial spaceflight.

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 ISS is nearing retirement, so why is NASA still gung-ho about Starliner? Read More »

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Congress moves to reject bulk of White House’s proposed NASA cuts

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Fewer robots, more humans

The House version of NASA’s fiscal year 2026 budget includes $9.7 billion for exploration programs, a roughly 25 percent boost over NASA’s exploration budget for 2025, and 17 percent more than the Trump administration’s request in May. The text of the House bill released publicly doesn’t include any language explicitly rejecting the White House’s plan to terminate the SLS and Orion programs after two more missions.

Instead, it directs NASA to submit a five-year budget profile for SLS, Orion, and associated ground systems to “ensure a crewed launch as early as possible.” A five-year planning budget seems to imply that the House committee wants SLS and Orion to stick around. The White House budget forecast zeros out funding for both programs after 2028.

The House also seeks to provide more than $4.1 billion for NASA’s space operations account, a slight cut from 2025 but well above the White House’s number. Space operations covers programs like the International Space Station, NASA’s Commercial Crew Program, and funding for new privately owned space stations to replace the ISS.

Many of NASA’s space technology programs would also be salvaged in the House budget, which allocates $913 million for tech development, a reduction from the 2025 budget but still an increase over the Trump administration’s request.

The House bill’s cuts to science and space technology, though more modest than those proposed by the White House, would still likely result in cancellations and delays for some of NASA’s robotic space missions.

Rep. Grace Meng (D-NY), the senior Democrat on the House subcommittee responsible for writing NASA’s budget, called out the bill’s cut to the agency’s science portfolio.

“As other countries are racing forward in space exploration and climate science, this bill would cause the US to fall behind by cutting NASA’s account by over $1.3 billion,” she said Tuesday.

Lawmakers reported the Senate spending bill to the full Senate Appropriations Committee last week by voice vote. Members of the House subcommittee advanced their bill to the full committee Tuesday afternoon by a vote of 9-6.

The budget bills will next be sent to the full appropriations committees of each chamber for a vote and an opportunity for amendments, before moving on to the floor for a vote by all members.

It’s still early in the annual appropriations process, and a final budget bill is likely months away from passing both houses of Congress and heading to President Donald Trump’s desk for signature. There’s no guarantee Trump will sign any congressional budget bill, or that Congress will finish the appropriations process before this year’s budget runs out on September 30.

Congress moves to reject bulk of White House’s proposed NASA cuts Read More »

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We saw the heart of Pluto 10 years ago—it’ll be a long wait to see the rest

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A 50-year wait for a second mission wouldn’t be surprising. Just ask Uranus and Neptune.

Four images from New Horizons’ Long Range Reconnaissance Imager (LORRI) were combined with color data from the spacecraft’s Ralph instrument to create this enhanced color global view of Pluto. Credit: NASA/Johns Hopkins University/SWRI

NASA’s New Horizons spacecraft got a fleeting glimpse of Pluto 10 years ago, revealing a distant world with a picturesque landscape that, paradoxically, appears to be refreshing itself in the cold depths of our Solar System.

The mission answered numerous questions about Pluto that have lingered since its discovery by astronomer Clyde Tombaugh in 1930. As is often the case with planetary exploration, the results from New Horizons’ flyby of Pluto on July 14, 2015, posed countless more questions. First and foremost, how did such a dynamic world come to be so far from the Sun?

For at least the next few decades, the only resources available for scientists to try to answer these questions will be either the New Horizons mission’s archive of more than 50 gigabits of data recorded during the flyby, or observations from billions of miles away with powerful telescopes on the ground or space-based observatories like Hubble and James Webb.

That fact is becoming abundantly clear. Ten years after the New Horizons encounter, there are no missions on the books to go back to Pluto and no real prospects for one.

A mission spanning generations

In normal times, with a stable NASA budget, scientists might get a chance to start developing another Pluto mission in perhaps 10 or 20 years, after higher-priority missions like Mars Sample Return, a spacecraft to orbit Uranus, and a probe to orbit and land on Saturn’s icy moon Enceladus. In that scenario, perhaps a new mission could reach Pluto and enter orbit before the end of the 2050s.

But these aren’t normal times. The Trump administration has proposed cutting NASA’s science budget in half, jeopardizing not only future missions to explore the Solar System but also threatening to shut down numerous operating spacecraft, including New Horizons itself as it speeds through an uncharted section of the Kuiper Belt toward interstellar space.

The proposed cuts are sapping morale within NASA and the broader space science community. If implemented, the budget reductions would affect more than NASA’s actual missions. They would also slash NASA’s funding available for research, eliminating grants that could pay for scientists to analyze existing data stored in the New Horizons archive or telescopic observations to peer at Pluto from afar.

The White House maintains funding for newly launched missions like Europa Clipper and an exciting mission called Dragonfly to soar through the skies of Saturn’s moon Titan. Instead, the Trump administration’s proposed budget, which still must be approved by Congress, suggests a reluctance to fund new missions exploring anything beyond the Moon or Mars, where NASA would focus efforts on human exploration and bankroll an assortment of commercial projects.

NASA’s New Horizons spacecraft undergoing launch preparations at Kennedy Space Center, Florida, in September 2005. Credit: NASA

In this environment, it’s difficult to imagine the development of a new Pluto mission to begin any time in the next 20 years. Even if Congress or a future presidential administration restores NASA’s planetary science budget, a Pluto mission wouldn’t be near the top of the agency’s to-do list.

The National Academies’ most recent decadal survey prioritized Mars Sample Return, a Uranus orbiter, and an Enceladus “Orbilander” mission in their recommendations to NASA’s planetary science program through 2032. None of these missions has a realistic chance to launch by 2032, and it seems more likely than not that none of them will be in any kind of advanced stage of development by then.

The panel of scientists participating in the latest decadal survey—released in 2022—determined that a second mission to Pluto did not merit a technical risk and cost evaluation report, meaning it wasn’t even shortlisted for consideration as a science priority for NASA.

There’s a broad consensus in the scientific community that a follow-up mission to Pluto should be an orbiter, and not a second flyby. New Horizons zipped by Pluto at a relative velocity of nearly 31,000 mph (14 kilometers per second), flying as close as 7,750 miles (12,500 kilometers).

At that range and velocity, the spacecraft’s best camera was close enough to resolve something the size of a football field for less than an hour. Pluto was there, then it was gone. New Horizons only glimpsed half of Pluto at decent resolution, but what it saw revealed a heart-shaped sheet of frozen nitrogen and methane with scattered mountains of water ice, all floating on what scientists believe is likely a buried ocean of liquid water.

Pluto must harbor a wellspring of internal heat to keep from freezing solid, something researchers didn’t anticipate before the arrival of New Horizons.

New Horizons revealed Pluto as a mysterious world with icy mountains and very smooth plains. Credit: NASA

So, what is Pluto’s ocean like? How thick are Pluto’s ice sheets? Are any of Pluto’s suspected cryovolcanoes still active today? And, what secrets are hidden on the other half of Pluto?

These questions, and more, could be answered by an orbiter. Some of the scientists who worked on New Horizons have developed an outline for a conceptual mission to orbit Pluto. This mission, named Persephone for the wife of Pluto in classical mythology, hasn’t been submitted to NASA as a real proposal, but it’s worth illustrating the difficulties in not just reaching Pluto, but maneuvering into orbit around a dwarf planet so far from the Earth.

Nuclear is the answer

The initial outline for Persephone released in 2020 called for a launch in 2031 on NASA’s Space Launch System Block 2 rocket with an added Centaur kick stage. Again, this isn’t a realistic timeline for such an ambitious mission, and the rocket selected for this concept doesn’t exist. But if you assume Persephone could launch on a souped-up super heavy-lift SLS rocket in 2031, it would take more than 27 years for the spacecraft to reach Pluto before sliding into orbit in 2058.

Another concept study led by Alan Stern, also the principal investigator on the New Horizons mission, shows how a future Pluto orbiter could reach its destination by the late 2050s, assuming a launch on an SLS rocket around 2030. Stern’s concept, called the Gold Standard, would reserve enough propellant to leave Pluto and go on to fly by another more distant object.

Persephone and Gold Standard both assume a Pluto-bound spacecraft can get a gravitational boost from Jupiter. But Jupiter moves out of alignment from 2032 until the early 2040s, adding a decade or more to the travel time for any mission leaving Earth in those years.

It took nine years for New Horizons to make the trip from Earth to Pluto, but the spacecraft was significantly smaller than an orbiter would need to be. That’s because an orbiter has to carry enough power and fuel to slow down on approach to Pluto, allowing the dwarf planet’s weak gravity to capture it into orbit. A spacecraft traveling too fast, without enough fuel, would zoom past Pluto just like New Horizons.

The Persephone concept would use five nuclear radioisotope power generators and conventional electric thrusters, putting it within reach of existing technology. A 2020 white paper authored by John Casani, a longtime project manager at the Jet Propulsion Laboratory who died last month, showed the long-term promise of next-generation nuclear electric propulsion.

A relatively modest 10-kilowatt nuclear reactor to power electric thrusters would reduce the flight time to Pluto by 25 to 30 percent, while also providing enough electricity to power a radio transmitter to send science data back to Earth at a rate four times faster, according to the mission study report on the Persephone concept.

However, nuclear electric propulsion technologies are still early in the development phase, and Trump’s budget proposal also eliminates any funding for nuclear rocket research.

A concept for a nuclear electric propulsion system to power a spacecraft toward the outer Solar System. Credit: NASA/JPL-Caltech

A rocket like SpaceX’s Starship might eventually be capable of accelerating a probe into the outer Solar System, but detailed studies of Starship’s potential for a Pluto mission haven’t been published yet. A Starship-launched Pluto probe would have its own unique challenges, and it’s unclear whether it would have any advantages over nuclear electric propulsion.

How much would all of this cost? It’s anyone’s guess at this point. Scientists estimated the Persephone concept would cost $3 billion, excluding launch costs, which might cost $1 billion or more if a Pluto mission requires a bespoke launch solution. Development of a nuclear electric propulsion system would almost certainly cost billions of dollars, too.

All of this suggests 50 years or more might elapse between the first and second explorations of Pluto. That is in line with the span of time between the first flybys of Uranus and Neptune by NASA’s Voyager spacecraft in 1986 and 1989, and the earliest possible timeline for a mission to revisit those two ice giants.

So, it’s no surprise scientists are girding for a long wait—and perhaps taking a renewed interest in their own life expectancies—until they get a second look at one of the most seductive worlds in our Solar System.

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.

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“It’s a heist”: Senator calls out Texas for trying to steal shuttle from Smithsonian

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Citing research by NASA and the Smithsonian, Durbin said that the total was closer to $305 million and that did not include the estimated $178 million needed to build a facility to house and display Discovery once in Houston.

Furthermore, it was unclear if Congress even has the right to remove an artifact, let alone a space shuttle, from the Smithsonian’s collection. The Washington, DC, institution, which serves as a trust instrumentality of the US, maintains that it owns Discovery. The paperwork signed by NASA in 2012 transferred “all rights, interest, title, and ownership” for the spacecraft to the Smithsonian.

“This will be the first time ever in the history of the Smithsonian someone has taken one of their displays and forcibly taken possession of it. What are we doing here? They don’t have the right in Texas to claim this,” said Durbin.

Houston was not the only city to miss out on displaying a retired space shuttle. In 2011, Durbin and fellow Illinois Senator Mark Kirk appealed to NASA to exhibit one of the winged spacecraft at the Adler Planetarium in Chicago. The agency ultimately decided to award the shuttles to the National Air and Space Museum, the Kennedy Space Center Visitor Complex in Florida, and the California Science Center in Los Angeles.

Houston, we have a problem

A prototype orbiter that was exhibited where Discovery is now was transferred to the Intrepid Museum in New York City.

To be able to bring up his points at Thursday’s hearing, Durbin introduced the “Houston, We Have a Problem” amendment to “prohibit the use of funds to transfer a decommissioned space shuttle from one location to another location.”

He then withdrew the amendment after having voiced his objections.

“I think we’re dealing with something called waste. Eighty-five million dollars worth of waste. I know that this is a controversial issue, and I know that there are other agencies, Smithsonian, NASA, and others that are interested in this issue; I’m going to withdraw this amendment, but I’m going to ask my colleagues be honest about it,” said Durbin. “I hope that we think about this long and hard.”

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White House works to ground NASA science missions before Congress can act

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“We would be turning off some fabulous missions that are doing extremely well.”

NASA’s Juno spacecraft skimmed the upper wisps of Jupiter’s atmosphere when JunoCam snapped this image from an altitude of about 14,500 km above the planet’s swirling cloud tops. Credit: NASA/JPL-Caltech/SwRI/MSSS/Roman Tkachenko

In another sign that the Trump White House is aggressively moving to slash NASA’s science programs, dozens of mission leaders have been asked to prepare “closeout” plans by the end of next week.

The new directive came from NASA’s senior leadership on Monday, which is acting on behalf of the White House Office of Management and Budget. Copies of these memos, which appear to vary a little by department, were reviewed by Ars. The detailed closeout plans called for must be prepared by as soon as July 9 for some missions, which has left principal investigators scrambling due to the tight deadline and the July 4 holiday weekend.

Projects should prepare their plans assuming closeout direction is given on October 1, 2025, one of the NASA memos states. Missions in operations—that is to say, spacecraft whizzing around the Solar System conducting science right now—should “assume closeout is complete within 3 months.”

The memos are careful to state that the preparation of these closeout plans is for the purposes of a “planning exercise only.” However, multiple scientists familiar with the new directive from NASA’s leadership do not believe these closeout plans are merely for planning purposes.

Instead, based on the budget process to date and statements from the White House, they view the memos as an effort by the Trump administration to move forward with canceling as many NASA science missions as possible before Congress passes a budget for the upcoming fiscal year, 2026. This fiscal year begins on October 1, three months from today.

Science at risk

The Trump White House released its proposed budget for NASA a little more than a month ago, seeking to reduce NASA’s budget by about 24 percent, from $24.8 billion this year to $18.8 billion in fiscal year 2026. Some areas within the budget were hit harder than others, particularly the Science Mission Directorate, which sustained nearly 50 percent in proposed cuts.

The space agency has 124 science missions in development, prime operations, or extended operations. Effectively, the proposed cuts would cancel 41 of these missions, and another 17 would see their funding zeroed out in the near future. Nearly half of NASA’s science missions would therefore end, and dozens more would receive budget cuts of 20–40 percent.

This includes some high-profile casualties, including NASA’s only mission at Jupiter, an effort to explore an asteroid that will fly extremely close to Earth in 2029, two promising missions to Venus, and an effort to return samples from Mars.

“We would be turning off some fabulous missions that are doing extremely well,” said Jim Green, a physicist who led NASA’s Planetary Science Program for 12 years before his retirement in 2022.

Normally, after the White House proposes a budget for the upcoming fiscal year, it is considered by appropriators in Congress responsible for setting funding levels and publishing a budget. However, in recent years, Congress has been unable to agree upon a budget and pass it before the beginning of the next fiscal year. This has led to a “continuing resolution” in which, generally, NASA missions continue to receive funding consistent with budget levels set during the previous fiscal year.

However, multiple sources indicated to Ars that may not happen this year, and the new memos offer an important clue in this regard.

Making missions go dark

The memos were sent to the principal investigators of the missions that the White House budget seeks to cancel. On one hand, it is prudent to have a plan of action in place should these missions actually be canceled due to a new budget, assuming one is in place by October 1. It is NASA’s job to execute the budget it is given.

But there very likely is a more cynical plan at play here. The Office of Management and Budget, led by Russ Vought, has been seeking to cut the US government’s science portfolio across the board, and it fully expects a continuing resolution to be adopted as Congress almost certainly won’t have a budget signed.

The congressional committees have been paralyzed, to some degree, by the Trump administration’s full-court press to pass the “One Big Beautiful Bill,” which exists outside of the traditional budget process. Congressional work to set the budget for fiscal year 2026 remains in its early stages, and with summer recesses looming, passage of any bill will almost certainly require many months.

Amid this uncertainty, Vought appears to be moving to shut down as many of these missions as possible.

The PBR is the plan

How will Vought and his office accomplish this? Effectively, they seek to turn the president’s budget request into the operating plan for NASA—instead of a continuing resolution—in the absence of a fiscal year 2026 budget.

This has already been communicated to NASA’s field center directors. Recently, according to multiple sources, NASA’s chief of staff, Brian Hughes, told these center leaders that the president’s budget request would soon become their operating plans. Hughes, who worked on Trump’s 2024 campaign, is one of the senior political leaders running NASA in the absence of a confirmed administrator.

(Update: After publication of this article, NASA press secretary Bethany Stevens denied Hughes had said this. “This is either a misinterpretation or mischaracterization of Brian’s words,” she said. “Brian has issued no guidance stating that the PBR will become the operating plan for NASA prior to Congressional authorization of a budget.”)

During a typical budget year, NASA officials submit an operating plan to Congress so authorizers and appropriators know what is happening at the agency as part of the budget-making process. During this give-and-take, appropriators provide feedback; i.e., “continue working on such and such” because it is the intent of Congress to continue funding that activity regardless of the White House’s proposed budget. For example, this process saved NASA’s Chandra X-ray Observatory from having its operations rapidly curtailed last year.

NASA typically complies with guidance from Congress since it receives its budget from Congress. (Really, you do not want to bite the hand that feeds.) However, this year’s process is not expected to be normal, and there is no legal requirement for NASA (or other federal agencies) to consider congressional feedback on their operating plans.

This year, in fact, the Office of Management and Budget has even stopped NASA from submitting operational plans to Congress.

“This is yet another bad faith move by the administration, which seems hell-bent on attacking science and the future of American innovation,” said Rep. George Whitesides (D-Calif.), who previously served as NASA’s chief of staff. “To go around Congress, and the committee of jurisdiction that I sit on, to enact their radical agenda that will make us less safe, less competitive, and less able to respond to threats is not only dangerous, it will cede all ground to our adversaries like China.”

Will the last planetary scientist please turn out the lights?

How will this play out?

There are multiple strategies, and some of them are likely to end up in court fights. Philosophically, Vought believes strongly that the president should have more authority to direct federal spending. And he appears likely to try to force the issue this year. Using tactics such as recission—essentially ordering federal agencies to freeze spending—and impoundment, Vought will seek to implement the priorities in the president’s budget request, which his office wrote.

Beginning October 1, without a fiscal year 2026 budget in place, NASA may be directed to start following the closeout plans submitted this month by principal investigators and turning missions off. That means the lights go out at Jupiter, telescopes stop gathering data across the Solar System, and so on for dozens of missions.

And once those missions are gone, they’re almost impossible to bring back—even if Congress were inclined to restore funding months later with a new budget.

“If there’s not much hope to restart a mission, the people who are managing Juno, New Horizons, and other missions are going to be looking for their next job,” Green said. “They’re going to be gone. Within a few months, you won’t be able to get the expertise back. And without the expertise, you don’t have the ability to run the mission safely.”

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Eric Berger is the senior space editor at Ars Technica, covering everything from astronomy to private space to NASA policy, and author of two books: Liftoff, about the rise of SpaceX; and Reentry, on the development of the Falcon 9 rocket and Dragon. A certified meteorologist, Eric lives in Houston.

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