Science

natural-piezoelectric-effect-may-build-gold-deposits

Natural piezoelectric effect may build gold deposits

chemistry, geology, gold, materials science, Quartz, Science / /

Building the bling —

How does an unreactive, barely soluble metal end up forming giant chunks?

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Image of a white rock with gold and black deposits speckled throughout it.

Enlarge / A lot of gold deposits are found embedded in quartz crystals.

One of the reasons gold is so valuable is because it is highly unreactive—if you make something out of gold, it keeps its lustrous radiance. Even when you can react it with another material, it’s also barely soluble, a combination that makes it difficult to purify away from other materials. Which is part of why a large majority of the gold we’ve obtained comes from deposits where it is present in large chunks, some of them reaching hundreds of kilograms.

Those of you paying careful attention to the previous paragraph may have noticed a problem here: If gold is so difficult to get into its pure form, how do natural processes create enormous chunks of it? On Monday, a group of Australian researchers published a hypothesis, and a bit of evidence supporting it. They propose that an earthquake-triggered piezoelectric effect essentially electroplates gold onto quartz crystals.

The hypothesis

Approximately 75 percent of the gold humanity has obtained has come from what are called orogenic gold deposits. Orogeny is a term for the tectonic processes that build mountains, and orogenic gold deposits form in the seams where two bodies of rock are moving past each other. These areas are often filled with hot hydrothermal fluids, and the heat can increase the solubility of gold from “barely there” to “extremely low,” meaning generally less than a single milligram in a liter of water.

The other striking thing about these deposits is that they’re generally associated with the mineral quartz, a crystalline form of silicon dioxide. And that fact formed the foundation for the new hypothesis, which brings together a number of topics that are generally considered largely unrelated.

It turns out that quartz is the only abundant mineral that’s piezoelectric, meaning that it generates a charge when it’s placed under strain. While you don’t need to understand why that’s the case to follow this hypothesis, the researchers’ explanation of the piezoelectric effect is remarkably cogent and clear, so I’ll just quote it here for people who want to come away from this having learned something: “Quartz is the only common mineral that forms crystals lacking a center of symmetry (non-centrosymmetric). Non-centrosymmetric crystals distorted under stress have an imbalance in their internal electric configuration, which produces an electrical potential—or voltage—across the crystal that is directly proportional to the applied mechanical force.”

Quartz happens to be an insulator, so this electric potential doesn’t easily dissipate on its own. It can, however, be eliminated through the transfer of electrons to or from any materials that touch the quartz crystals, including fluids. In practice, that means the charge can drive redox (reduction/oxidation) reactions in any nearby fluids, potentially neutralizing any dissolved ions and causing them to come out of solution.

This has the potential to be self-reinforcing. Once a small metal deposit forms on the surface of quartz, it will ease the exchange of electrons with the fluid in its immediate vicinity, meaning more metal will be deposited in the same location. This will also lower the concentration of the metal in the nearby solution, which will favor the diffusion of additional metal ions into the location, meaning that the fluid itself doesn’t need to keep circulating past the same spot.

Finally, the concept also needs a source of strain to generate the piezoelectric effect in the first place. But remember that this is all happening in an active fault zone, so strain is not in short supply.

And the evidence

Figuring out whether this happens in active fault zones would be extremely challenging for all sorts of reasons. But it’s relatively easy to dunk some quartz crystals in a solution containing gold and see what happens. So the latter is the route the Australians took.

The gold came in the form of either a solution of gold chloride ions or a suspension of gold nanoparticles. Quartz crystals were either pure quartz or obtained from a gold-rich area and already contained some small gold deposits. The crystals themselves were subject to strain at a frequency similar to that produced by small earthquakes, and the experiment was left to run for an hour.

An hour was enough to get small gold deposits to form on the pure quartz crystals, regardless of whether it was from dissolved gold or suspended gold nanoparticles. In the case of the naturally formed quartz, the gold ended up being deposited on the existing sites where gold metal is present, rather than forming additional deposits.

The researchers note that a lot of the quartz in deposits is disordered rather than in the form of single crystals. In disordered material, there are lots of small crystals oriented randomly, meaning the piezoelectric effect of any one of these crystals is typically canceled out by its neighbors. So, gold will preferentially form on single crystals, which also helps explain why it’s found in large lumps in these deposits.

So, this is a pretty compelling hypothesis—it explains something puzzling, relies on well-established processes, and has a bit of experimental support. Given that activity in active faults is likely to remain both slow and inaccessible, the next steps are probably going to involve getting longer-term information on the rate of deposition through this process and a physical comparison of these deposits with those found in natural settings.

Nature Geoscience, 2024. DOI: 10.1038/s41561-024-01514-1  (About DOIs).

Natural piezoelectric effect may build gold deposits Read More »

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The New Glenn rocket’s second stage set to roll to the launch pad on Monday

blue origin, new glenn, Science, Space / /

Rings of power —

The large rocket will attempt to land on its debut flight.

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Image of the New Glenn second stage on its mobile test stand.

Enlarge / Image of the New Glenn second stage on its mobile test stand.

Blue Origin

Blue Origin plans to enter the final phase of its launch preparations for the New Glenn rocket on Monday by rolling the vehicle’s second stage to Launch Complex 36 in Florida. Pending weather and other final considerations, a rollout could occur as early as Monday afternoon.

This is the flight version of the vehicle, with the exception of a fixed adaptor for weather protection during a test campaign. The launch company is targeting a hot fire test of the upper stage, which is powered by two BE-3U engines, within the next week or so.

The launch company, founded by Amazon’s Jeff Bezos, is closing in on the debut launch of the massive New Glenn rocket, which will be one of the most powerful launch vehicles in the world. With a fully reusable first stage, New Glenn has a lift capacity of 45 metric tons to low-Earth orbit.

A tight launch window

NASA has contracted with Blue Origin for the first launch of New Glenn, seeking to boost two relatively small spacecraft to Mars. These ESCAPADE orbiters have a tight launch window, from October 13 to October 21. Managed by the Space Sciences Laboratory at the University of California, Berkeley, the ESCAPADE spacecraft will analyze the Martian magnetic field.

It is an open question as to whether Blue Origin can integrate, test, and launch ESCAPADE within the launch window, which opens in less than six weeks. Between now and then the company must successfully test fire the second stage, and then roll the first stage out to the company’s facilities at the Cape Canaveral launch complex.

The company’s plan is to mate the second and first stages of the rocket, and add the payload fairing with the spacecraft inside of it, before conducting a short hot fire test of the first stage. If all goes well, Blue Origin plans to attempt a launch during the October window for ESCAPADE. These spacecraft arrived at the company’s launch facilities a couple of weeks ago.

This seems like an ambitious timeline for the new rocket, as final integration of stages is often where issues are discovered with new launch vehicles. However, Blue Origin has found a new sense or urgency under chief executive Dave Limp, who joined the company in December—hence the frenetic activity with the second stage over the Labor Day holiday weekend in the United States.

The road to commercial heavy lift

Limp led devices and services at Amazon for more than a decade, which included oversight of the Project Kuiper satellite project. In his nine months at Blue Origin, he has prioritized completion and launch of the New Glenn rocket amid a large portfolio of projects at the company.

New Glenn will join SpaceX’s Falcon Heavy and Starship rockets as privately developed, heavy lift rockets. Its debut will confirm the trend in US spaceflight toward commercial developed large rockets that can be reused. Both Bezos and SpaceX founder Elon Musk have identified lower cost, rapidly reusable rockets as a key to expanding human activity in outer space. Bezos would like to see mining and other destructive industrial activities moved off world in order to preserve the natural vitality of Earth.

Whether it launches ESCAPADE next month, or some other payload on its debut flight after October, New Glenn will attempt an ambitious drone ship landing of the first stage on its debut launch. Success is unlikely—SpaceX did not manage to land its first Falcon 9 at sea until the 23rd launch of this rocket.

However, Bezos and Blue Origin are determined to gather all of the data possible from New Glenn’s initial flight in order to reach reusability of the larger booster as soon as possible. The attempt, whether successful or not, should make for compelling viewing.

The New Glenn rocket’s second stage set to roll to the launch pad on Monday Read More »

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The Starliner spacecraft has started to emit strange noises

Science, Space / /

Submarines in space —

“I don’t know what’s making it.”

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Boeing's Starliner spacecraft is seen docked at the International Space Station on June 13.

Enlarge / Boeing’s Starliner spacecraft is seen docked at the International Space Station on June 13.

On Saturday NASA astronaut Butch Wilmore noticed some strange noises emanating from a speaker inside the Starliner spacecraft.

“I’ve got a question about Starliner,” Wilmore radioed down to Mission Control, at Johnson Space Center in Houston. “There’s a strange noise coming through the speaker … I don’t know what’s making it.”

Wilmore said he was not sure if there was some oddity in the connection between the station and the spacecraft causing the noise, or something else. He asked the flight controllers in Houston to see if they could listen to the audio inside the spacecraft. A few minutes later, Mission Control radioed back that they were linked via “hardline” to listen to audio inside Starliner, which has now been docked to the International Space Station for nearly three months.

Wilmore, apparently floating in Starliner, then put his microphone up to the speaker inside Starliner. Shortly thereafter, there was an audible pinging that was quite distinctive. “Alright Butch, that one came through,” Mission control radioed up to Wilmore. “It was kind of like a pulsing noise, almost like a sonar ping.”

“I’ll do it one more time, and I’ll let y’all scratch your heads and see if you can figure out what’s going on,” Wilmore replied. The odd, sonar-like audio then repeated itself. “Alright, over to you. Call us if you figure it out.”

A space oddity

A recording of this audio, and Wilmore’s conversation with Mission Control, was captured and shared by a Michigan-based meteorologist named Rob Dale.

It was not immediately clear what was causing the odd, and somewhat eerie noise. As Starliner flies to the space station, it maintains communications with the space station via a radio frequency system. Once docked, however, there is a hardline umbilical that carries audio.

Astronauts notice such oddities in space from time to time. For example, during China’s first human spaceflight int 2003, astronaut Yang Liwei said he heard what sounded like an iron bucket being knocked by a wooden hammer while in orbit. Later, scientists realized the noise was due to small deformations in the spacecraft due to a difference in pressure between its inner and outer walls.

This weekend’s sonar-like noises most likely have a benign cause, and Wilmore certainly did not sound frazzled. But the odd noises are worth noting given the challenges that Boeing and NASA have had with the debut crewed flight of Starliner, including substantial helium leaks in flight, and failing thrusters. NASA announced a week ago that, due to uncertainty about the flyability of Starliner, it would come home without its original crew of Wilmore and Suni Williams.

Starliner is now due to fly back autonomously to Earth on Friday, September 6. Wilmore and Williams will return to Earth next February, flying aboard a Crew Dragon spacecraft scheduled to launch with just two astronauts later this month.

The Starliner spacecraft has started to emit strange noises Read More »

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Blood puddles, mold, tainted meat, bugs: Boar’s Head inspections are horrifying

blood, health, inspection, listeria, Listeria monocytogenes, Meat, mold, outbreak, Science, USDA / /

“ample amounts of blood” —

The USDA recorded 69 violations in a year. So far, 9 people have died in the outbreak.

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A recall notice is posted next to Boar's Head meats that are displayed at a Safeway store on July 31, 2024, in San Rafael, California.

Enlarge / A recall notice is posted next to Boar’s Head meats that are displayed at a Safeway store on July 31, 2024, in San Rafael, California.

Federal inspections found 69 violations—many grisly—at the Boar’s Head meat facility at the center of a deadly, nationwide Listeria outbreak that has now killed nine people, sickened and hospitalized a total of 57 across 18 states, and spurred the nationwide recall of more than 7 million pounds of meat.

The Jarratt, Virginia-based facility had repeated problems with mold, water leaks, dirty equipment and rooms, meat debris stuck on walls and equipment, various bugs, and, at one point, puddles of blood on the floor, according to inspection reports from the US Department of Agriculture’s Food Safety and Inspection Services. The reports were obtained by CBS News through a Freedom of Information Act Request. In all, the reports outline 69 violations just between the dates of August 1, 2023, and August 2, 2024.

The findings in the reports reveal the perfect conditions for the company’s meat to become contaminated with the germ behind the deadly outbreak, Listeria monocytogenes. This is a hardy germ that is ubiquitous in the environment, including in soil and water, and it spreads among people via the fecal-oral route. In healthy people, it usually only causes gastrointestinal infections. But for older people, newborns, and the immunocompromised, it can cause a life-threatening invasive infection with a fatality rate of around 17 percent. It’s also a significant danger to pregnant people, causing miscarriage, stillbirth, premature delivery, and life-threatening infections in newborns.

While it’s always lurking, L. monocytogenes especially plagues the food industry because it has the notable ability to reproduce at refrigerator temperatures—a condition that typically limits the growth of other nasty germs.

Buildup and bugs

In the Boar’s Head facility, L. monocytogenes appeared to have various opportunities to beef up its numbers. For one, the facility had a long track record of trash and meat debris in various places, which was sometimes reported alongside insect sightings. For instance, on June 10, an inspector entered the “pickle vat pump room” and noted “heavy meat buildup” on the walls, which were also crawling with flies and gnats. On the same day, an inspection of a different area found a rollup door with meat buildup on it, and a water pipe over the door leaked a steady stream of water down the wall and onto the floor. There was also a “steady line of ants” and an inventory of ladybugs, a cockroach, and a beetle of some sort.  Earlier, on March 13, an inspection of a room next to where netted hams were handled, an inspector found trash and meat protein on the floor, including “whole pork muscles.”

Going back to August 8, 2023, an inspection likewise found processing lines covered in meat particles and trash. “Heavy discolored meat buildup” was found covering a hydraulic pump, and pieces of meat and fat clung to the support braces of a catwalk. An inspection-line scale had meat pieces and trash in it—and it smelled bad. “Multiple instances of meat were found around the department on the floor. As well as standing water containing a brown mud/dirt-like substance,” the inspection read.

The facility had numerous problems with water leaks and condensation, which fits with the other numerous sightings of mold. The facility temporarily fixed water pipe leaks by wrapping the pipes in plastic. On October 26, an inspector noticed a plastic-wrapped pipe in the cure cooler. The plastic was dated August 17, and there was “orange/brown water pooled in the lowest hanging point.”

Bubbles and blood

On January 9, the inspection of a holding cooler found spots of black mold as large as a quarter throughout the room. On July 23, an inspector noticed bubbled paint on the wall around employee hand-washing sinks. The bubbles were filled with water. And under the sinks, the inspector found black mold and pink mildew.

On July 17, the inspector found “green algal growth” in a puddle of standing water in a raw holding cooler. And on July 27, an inspector noted clear liquid leaking out from a square patch on the ceiling. Behind the patch, there were two other patches that were also leaking. An employee came and wiped the liquid away with a sponge, but it returned within 10 seconds. The employee wiped it again, and the liquid again returned within 10 seconds. Meanwhile, a ceiling fan mounted close by was blowing the leaking liquid onto uncovered hams in a hallway outside the room.

To top if off, a report on February 21 found a raw cooler with “ample amounts of blood in puddles on the floor” and a “rancid smell.”

According to USDA documents, the agency has not taken enforcement actions against Boar’s Head, and there is no data available on swab testing for Listeria at the Virginia facility. The plant has been shut down since late July after health investigators found the outbreak strain of L. monocytogenes in unopened containers of Boar’s Head liverwurst.

In a statement updated on August 29, Boar’s Head said, “We are conducting an extensive investigation, working closely with the USDA and government regulatory agencies, as well as with the industry’s leading food safety experts, to determine how our liverwurst produced at our Jarratt, Virginia facility was adulterated and to prevent it from happening again… We will not resume operations at this facility until we are confident that it meets USDA regulatory standards and Boar’s Head’s highest quality and safety standards.”

Blood puddles, mold, tainted meat, bugs: Boar’s Head inspections are horrifying Read More »

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Rocket Report: Blue Origin flies six to space; when will Starship launch again?

Science, Space / /

Nat-sec bonafides —

It seems like we’ll have to wait a bit for ABL to put another rocket on the launch pad.

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The first stage of the RFA One rocket collapses on its launch pad in Scotland after an aborted test-firing.

Enlarge / The first stage of the RFA One rocket collapses on its launch pad in Scotland after an aborted test-firing.

Welcome to Edition 7.09 of the Rocket Report! When will SpaceX launch the next test flight of Starship? It certainly doesn’t look to be imminent, with SpaceX ground teams in Texas feverishly working to beef up the launch pad in preparation for an attempt to catch the rocket’s massive Super Heavy booster when it returns to the launch site on the next flight. Meanwhile, the FAA is reviewing SpaceX’s proposal to recover the booster on land for the first time. And on Thursday, a NASA official monitoring SpaceX’s Starship effort said the next test flight was scheduled for launch in the “fall,” suggesting it could be a month or more away. Also, we’ve listed the next three launches as “TBD” (To Be Determined) because SpaceX is waiting for FAA approval to resume Falcon 9 launches following a booster landing failure this week, and the Polaris Dawn mission is on hold due to an unfavorable weather forecast.

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.

Firefly has a new chief executive. Jason Kim, former head of Boeing-owned satellite-maker Millennium Space Systems, has been appointed CEO of Firefly Aerospace effective October 1, Aviation Week & Space Technology reports. Kim joins Firefly as the ambitious space transportation startup, which has raised close to $600 million from investors since its 2021 founding, looks to launch a commercial lunar lander for NASA before the end of the year. Firefly is also working on a medium-lift rocket in partnership with Northrop Grumman, with the goal of competing for missions to resupply the International Space Station and launch payloads for the US military and commercial customers.

Kim brings national security chops … At Millennium, Kim shepherded several national security space missions to completion, including Victus Nox, a responsive satellite and launch mission for the US Space Force. Millennium manufactured the satellite for the Victus Nox mission, and Firefly Aerospace successfully launched it on an Alpha rocket just 27 hours after receiving the launch order from the military. This required Millennium and Firefly to integrate the satellite with the Alpha rocket on short notice. Kim replaces Bill Weber, who left the CEO role at Firefly in July after allegations he had an improper relationship with a female employee.

The easiest way to keep up with Eric Berger’s space reporting is to sign up for his newsletter, we’ll collect his stories in your inbox.

New Shepard flies again. Blue Origin launched six passengers, including a NASA-sponsored researcher and the youngest woman to fly in space, on a sub-orbital trip out of the lower atmosphere Thursday in the company’s eighth crewed spaceflight, CBS News reports. University of Florida researcher Rob Ferl, philanthropist Nicolina Elrick, adventurer Eugene Grin, Vanderbilt University cardiologist Elman Jahangir, American-Israeli entrepreneur Ephraim Rabin, and University of North Carolina senior Karsen Kitchen lifted off from Jeff Bezos’ West Texas launch site on Blue Origin’s New Shepard rocket. Kitchen became the youngest woman to fly higher than 100 kilometers (62 miles), and Ferl was the first NASA-funded researcher to fly on a suborbital rocket. Blue Origin and Virgin Galactic, its competitor in the suborbital human spaceflight market, have long touted their vehicles’ ability to support human-tended research in microgravity.

Three good chutes … This was Blue Origin’s first New Shepard flight since May 19, when one of the crew capsule’s three main parachutes failed to open fully on the descent. The passengers on that flight were fine, and Blue Origin says the capsule can return safely with just a single parachute if two fail. Blue Origin said it identified the cause of the parachute issue on the May flight, but didn’t offer details other than that the investigation “focused on the dis-reefing system that transitions the parachutes from the reefed to the disreefed state that did not function as designed on one of the three parachutes on NS-25,” Space News reports.

ABL’s rocket test failure damaged ground systems. A fiery malfunction on an Alaska launch pad last month not only destroyed the RS1 rocket ABL Space Systems was preparing for launch, but also damaged some ground systems at the site, ABL said in an update posted on X. The company said a fire developed “external to RS1’s base” after the booster’s 11 engines shut down during an aborted test-firing at Kodiak Island, Alaska. The fire was fed by fuel leaks from two of the engines, and ABL’s launch team was able to use water and inert gases to suppress the fire for more than 11 minutes. But the remote launch site doesn’t have a direct water supply, and mobile water tanks ran dry, causing the fire to grow until the rocket collapsed. ABL said a majority of the plumbing and electrical connections to the launch mount were damaged, but the launch mount’s structure, flame deflector, and other equipment were unharmed.

Few details on next steps … ABL published a detailed update on its investigation into the test failure, and its openness is worth noting. Engineers found two of the engines—the ones that leaked and fueled the fire—experienced “combustion instability” during their startup sequence. ABL said it believes differences in this RS1 rocket, called a Block 2 design, resulted in a higher-energy startup than expected. The company will return its damaged ground support equipment from Alaska to a facility in Long Beach, California, for refurbishment, and ABL says its next RS1 rocket is “well into production.” But the company didn’t share any information on corrective actions or a timeline for implementing them and returning to the launch pad with RS1. ABL aims to compete with other, more established small satellite launch companies like Rocket Lab and Firefly Aerospace, but its RS1 rocket hasn’t made it far from the launch pad. ABL’s first orbital launch attempt in January 2023 ended when the RS1 rocket lost power and fell back on its launch pad.

Rocket Report: Blue Origin flies six to space; when will Starship launch again? Read More »

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Boeing will try to fly its troubled Starliner capsule back to Earth next week

Boeing, commercial crew, Commercial space, human spaceflight, international space station, NASA, Science, Space, starliner / /

Destination desert —

The two astronauts who launched on Starliner will stay behind on the International Space Station.

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Boeing's Starliner spacecraft undocks from the International Space Station at the conclusion of an unpiloted test flight in May 2022.

Enlarge / Boeing’s Starliner spacecraft undocks from the International Space Station at the conclusion of an unpiloted test flight in May 2022.

NASA

NASA and Boeing are proceeding with final preparations to undock the Starliner spacecraft from the International Space Station next Friday, September 6, to head for landing at White Sands Space Harbor in southern New Mexico.

Astronauts Butch Wilmore and Suni Williams, who were supposed to return to Earth inside Starliner, will remain behind on the space station after NASA decided last week to conclude the Boeing test flight without its crew on board. NASA officials decided it was too risky to put the astronauts on Starliner after the spacecraft suffered thruster failures during its flight to the space station in early June.

Instead, Wilmore and Williams will come home on a SpaceX Dragon capsule no earlier than February, extending their planned stay on the space station from eight days to eight months. Flying on autopilot, the Starliner spacecraft is scheduled to depart the station at approximately 6: 04 pm EDT (22: 04 UTC) on September 6. The capsule will fire its engines to drop out of orbit and target a parachute-assisted landing in New Mexico at 12: 03 am EDT (04: 03 UTC) on September 7, NASA said in a statement Thursday.

NASA officials completed the second part of a two-day Flight Readiness Review on Thursday to clear the Starliner spacecraft for undocking and landing. However, there are strict weather rules for landing a Starliner spacecraft, so NASA and Boeing managers will decide next week whether to proceed with the return next Friday night or wait for better conditions at the White Sands landing zone.

Over the last few days, flight controllers updated parameters in Starliner’s software to handle a fully autonomous return to Earth without inputs from astronauts flying in the cockpit, NASA said. Boeing has flown two unpiloted Starliner test flights using the same type of autonomous reentry and landing operations. This mission, called the Crew Flight Test (CFT), was the first time astronauts launched into orbit inside a Starliner spacecraft, and was expected to pave the way for future operational missions to rotate four-person crews to and from the space station.

With the Starliner spacecraft unable to complete its test flight as intended, there are fundamental questions about the future of Boeing’s commercial crew program. NASA Administrator Bill Nelson said last week that Boeing’s new CEO, Kelly Ortberg, told him the aerospace company remained committed to Starliner. However, Boeing will be on the hook to pay for the cost of resolving problems with overheating thrusters and helium leaks that hamstrung the CFT mission. Boeing hasn’t made any public statements about the long-term future of the Starliner program since NASA decided to pull its astronauts off the spacecraft for its return to Earth.

Preparing for a contingency

NASA is clearly more comfortable with returning Wilmore and Williams to Earth inside SpaceX’s Dragon capsule, but the change disrupts crew operations at the space station. This week, astronauts have been reconfiguring the interior of a Dragon spacecraft currently docked at the outpost to support six crew members in the event of an emergency evacuation.

With Starliner leaving the space station next week, Dragon will become the lifeboat for Wilmore and Williams. If a fire, a collision with space junk, a medical emergency, or something else forces the crew to leave the complex, the Starliner astronauts will ride home on makeshift seats positioned under the four regular seats inside Dragon, where crews typically put cargo during launch and landing.

At least one of the Starliner astronauts would have to come home without a spacesuit to protect them if the cabin of the Dragon spacecraft depressurized on the descent. This has never happened on a Dragon mission before, but astronauts wear SpaceX-made pressure suits to mitigate the risk. The four astronauts who launched on Dragon have their suits, and NASA officials said a spare SpaceX suit already on the space station fit one of the Starliner astronauts, but they didn’t identify which one.

A pressure suit for the other Starliner crew member will launch on the next Dragon spacecraft—on the Crew-9 mission—set for liftoff on a SpaceX Falcon 9 rocket no earlier than September 24. Starliner’s troubles have also disrupted plans for the Crew-9 mission.

On Friday, NASA announced it would remove two astronauts from the Crew-9 mission, including its commander, Zena Cardman, who is a spaceflight rookie. Veteran astronaut Nick Hague will move from the pilot’s seat to take over as Crew-9 commander. Russian cosmonaut Aleksandr Gorbunov will join him.

NASA and Russia’s space agency, Roscosmos, have an agreement to launch Russian cosmonauts on Dragon missions and US astronauts on Russian Soyuz flights to the station. In exchange for NASA providing a ride for Gorbunov, NASA astronaut Don Pettit will fly to the space station on a Soyuz spacecraft next month.

The so-called “seat swap” arrangement ensures that, even if Dragon or Soyuz were grounded, there is always at least one US astronaut and one Russian cosmonaut on the station overseeing each partner’s segment of the outpost, maintaining propulsion, power generating, pointing control, thermal control, and other critical capabilities to keep the lab operational.

Boeing will try to fly its troubled Starliner capsule back to Earth next week Read More »

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NASA makes a very tough decision in setting final Crew-9 assignments

crew dragon, crew-9, NASA, Science, Space / /

From four to two —

“I am deeply proud of our entire crew.”

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Nick Hague, left, and Zena Cardman train inside a Crew Dragon spacecraft mock-up in November 2023.

Enlarge / Nick Hague, left, and Zena Cardman train inside a Crew Dragon spacecraft mock-up in November 2023.

NASA

On Friday NASA publicly announced a decision that has roiled the top levels of the agency’s human spaceflight program for several weeks. The space agency named the two crew members who will launch on a Crew Dragon mission set to lift off no earlier than September 24 to the International Space Station.

NASA astronaut Nick Hague will serve as the mission’s commander, and Roscosmos cosmonaut Aleksandr Gorbunov will serve as mission specialist. Instead of a usual complement of four astronauts, a two-person crew was necessitated by the need to use the Crew 9 spacecraft, Freedom, as a rescue vehicle for astronauts Butch Wilmore and Suni Williams. They flew to the station in June aboard Boeing’s Starliner vehicle, which has been deemed unsafe for them to return in.

Wilmore and Williams will join the Crew-9 increment on board the space station and fly back to Earth with Hague and Gorbunov next February.

The story behind the story

This represents a significant change from the original makeup of the Crew-9 manifest. NASA publicly named the original members of Crew-9 last January, which included three NASA astronauts and Gorbunov. It was to be commanded by Zena Cardman, piloted by Hague, with Stephanie Wilson and Gorbunov as mission specialists.

At the time, the naming of Cardman was significant—she would have been the first rookie astronaut without test pilot experience to command a NASA spaceflight. A 36-year-old geobiologist, Cardman joined NASA in 2017 and is well-regarded by her peers. The assignment of a rookie, non-test pilot to command the Crew-9 mission reflected NASA’s confidence in the self-flying capabilities of Dragon, which is intended to reach the station autonomously. The assignment was made by then-chief astronaut Reid Wiseman in 2022, and the Astronaut Office was confident that Cardman, with an experienced hand in Hague at her side, could command the mission.

The need to rescue Wilmore and Williams changed the equation. It fell upon Joe Acaba, a veteran astronaut who became chief of the Astronaut Office in February 2023, to down-select to a new crew manifest. To maintain its ongoing rotation with the Russian space program, one of the crew members needed to be Gorbunov. So Acaba had to pick from Cardman, Hague, and Wilson.

Initially, Acaba stuck with Cardman. She was the original commander of the mission, after all. But this prompted considerable dissent within the Astronaut Office, sources said. While Cardman is respected, and Dragon designed to be fully autonomous, it was asking a lot of her to be the sole NASA representative on board the vehicle. (Russian astronauts, generally, are not trained in depth on piloting US vehicles.) A non-trivial percentage of professional astronauts succumb to space sickness during the initial hours of their spaceflights.

Some members of the astronaut office argued that Hague was the safer choice. An Air Force test pilot, Hague survived a harrowing Soyuz spacecraft abort in 2018, and subsequently flew to space for more than six months in 2019. Hague, these astronauts said, was the safer choice for NASA if the agency truly sought to maximize chances of mission success.

Eventually these dissenters, with some support from the upper echelons of NASA management, prevailed, and Acaba swapped Hague for Cardman. A decision was reached before a Flight Readiness Review meeting on August 24, but it was not publicly announced until this Friday.

NASA’s official comment

“While we’ve changed crew before for a variety of reasons, downsizing crew for this flight was another tough decision to adjust to given that the crew has trained as a crew of four,” Acaba said in a news release issued Friday. “I have the utmost confidence in all our crew, who have been excellent throughout training for the mission. Zena and Stephanie will continue to assist their crewmates ahead of launch, and they exemplify what it means to be a professional astronaut.”

There was also a classy quote in the news release from Cardman, who revealed Friday that her father, Larry Cardman, passed away three weeks ago. “I am deeply proud of our entire crew,” she said. “And I am confident Nick and Alex will step into their roles with excellence. All four of us remain dedicated to the success of this mission, and Stephanie and I look forward to flying when the time is right.”

Here’s hoping her time comes very, very soon.

NASA makes a very tough decision in setting final Crew-9 assignments Read More »

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Space Command chief says dialogue with China is too often a one-way street

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Gen. Stephen Whiting, commander of US Space Command, speaks earlier this year at Peterson Space Force Base, Colorado.

Enlarge / Gen. Stephen Whiting, commander of US Space Command, speaks earlier this year at Peterson Space Force Base, Colorado.

The head of US Space Command said Wednesday he would like to see more transparency from the Chinese government on space debris, especially as one of China’s newer rockets has shown a propensity for breaking apart and littering low-Earth orbit with hundreds of pieces of space junk.

Gen. Stephen Whiting, commander of US Space Command, said he’s observed some improvement in the dialogue between US and Chinese military officials this year. But the disintegration of the upper stage from a Long March 6A rocket earlier this month showed China could do more to prevent the creation of space debris, and communicate openly about it when it happens.

The Chinese government acknowledged the breakup of the Long March 6A rocket’s upper stage in a statement by its Ministry of Foreign Affairs on August 14, more than a week after the rocket’s launch August 6 with the first batch of 18 Internet satellites for a megaconstellation of thousands of spacecraft analogous to SpaceX’s Starlink network.

Space Command reported it detected more than 300 objects associated with the breakup of the upper stage in orbit, and LeoLabs, a commercial space situational awareness company, said its radars detected at least 700 objects attributed to the Chinese rocket.

“I hope the next time there’s a rocket like that, that leaves a lot of debris, that it’s not our sensors that are the first to detect that, but we’re getting communications to help us understand that, just like we communicate with others,” Whiting said at an event hosted by the Mitchell Institute marking the fifth anniversary of the reestablishment of Space Command.

Whiting said he didn’t have any technical details about why the Long March 6A rocket’s upper stage broke apart, but it happened after the rocket deployed all of its payloads. “They had already released the satellites at that point, and it seems like the mission was overall successful, but all this debris gets left in orbit,” he said. “We certainly don’t want to see that kind of debris.”

Due regard

The Space Force’s 18th Space Defense Squadron, located at Vandenberg Space Force Base in California, is responsible for tracking objects in Earth orbit, maintaining a catalog of all satellites and space junk, and monitoring for potential collisions between spacecraft or debris. Space Command regularly issues warnings of conjunctions, or close approaches, between objects to commercial companies and foreign governments.

“For decades now, the United States has so cared about the space domain that we have made available the vast majority of tracking data that we have, for free, for the world,” Whiting said. “Every day, we screen every active satellite against all that debris, and we provide notifications out to everyone, including the Chinese and Russians.

“People sometimes ask, ‘Well, why do you do that?’ Well, it’s because we don’t want satellites to run into pieces of debris and create more debris. So we think it’s really important, and we have a set of responsible behaviors that we follow each and every day. We provide these notifications to the Chinese,” Whiting said.

The Commerce Department plans to take over some of the military’s role in space traffic management, but Space Command will maintain its own catalog and will remain responsible for working with foreign militaries on space debris matters, according to Whiting.

Space Command chief says dialogue with China is too often a one-way street Read More »

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Eli Lilly raises price of Zepbound while trumpeting discount on starter vials

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Pharma misdirection —

Cost for insured patients without coverage for the drug rises from $550 to $650 a month.

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An Eli Lilly & Co. Zepbound injection pen arranged in the Brooklyn borough of New York, US, on Thursday, March 28, 2024.

Enlarge / An Eli Lilly & Co. Zepbound injection pen arranged in the Brooklyn borough of New York, US, on Thursday, March 28, 2024.

Pharmaceutical giant Eli Lilly earned praise this week with an announcement that it is now selling starter dosages of its popular weight-loss drug tirzepatide (Zepbound) at a price significantly lower than before. But the cheers were short-lived as critics quickly noticed that Lilly also quietly raised the price on current versions of the drug—a move that was notably missing from the company’s press release this week.

In the past, Lilly sold Zepbound only in injectable pens with a list price of $1,060 for a month’s supply. Several dosages are available—2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, or 15 mg—and patients progressively increase their dosage until they reach a maintenance dosage. The recommended maintenance dosages are 5 mg, 10 mg, or 15 mg. The higher the dose, the more the weight loss. For instance, people using the 15 mg doses lost an average of 21 percent of their weight over 17 months in a clinical trial, while those on 5 mg doses only lost an average of 15 percent of their weight.

On Tuesday, Lilly announced that it will now sell Zepbound in vials, too. And a month’s supply of vials with the 2.5 mg doses will cost $399, while a month’s supply of 5 mg doses is priced at $549—a welcome drop from the $1,060 price tag. These prices are for a self-pay option, meaning that patients with a valid, on-label prescription can buy them directly from Lilly if they have no insurance or have insurance that does not cover the drug.

“This new option helps millions of adults with obesity access the medicine they need,” Lilly said in its announcement of the vials and their prices.

The company also included a quote from James Zervos, chief operating officer of the nonprofit Obesity Action Coalition. “Expanding coverage and affordability of treatments is vital to people living with obesity,” Zervos said. “We commend Lilly for their leadership in offering an innovative solution that brings us closer to making equitable care a reality.” Even President Biden chimed in on social media, saying he was “pleased” by the discount, though he urged drug companies to cut prices “across the board.”

“No rational reason, other than greed”

But, that wasn’t the end of the news. When Lilly released its press release, people noticed that the company had also increased the price of Zepbound pens for those who have insurance plans that don’t cover the drug. In the past, Lilly offered a “savings card” that allowed these patients to buy a month’s supply of any dosage of Zepbound pens for $550. Now the price is $650, a nearly 20 percent increase.

Lilly did not respond to Ars’ request for comment or questions about why the company increased the price for some patients.

Sen. Bernie Sanders (I-Vt.), a longtime critic of the pharmaceutical industry and their drug pricing, was quick to weigh in. He called the vial prices a “modest step forward” but noted that, even with the price reduction, millions of Americans still won’t be able to pay for the drug. At $549 a month, the price of the drug is a little over the average monthly payment for a used car, which was $523 in the first quarter of this year, according to Experian. As for the increase in pen pricing, Sanders called it “bad news.”

“In addition, Eli Lilly has still refused to lower the outrageous price of Mounjaro that Americans struggling with diabetes desperately need,” Sanders went on. “There is no rational reason, other than greed, why Mounjaro should cost $1,069 a month in the United States but just $485 in the United Kingdom and $94 in Japan.”

In May, a Senate committee report concluded that uptake of such weight-loss and diabetes drugs stands to “bankrupt our entire health care system,” given the high prices and large demand in the US. The report was produced by the Senate’s Health, Education, Labor, and Pensions (HELP) committee, which is chaired by Sanders.

Eli Lilly raises price of Zepbound while trumpeting discount on starter vials Read More »

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We can now watch Grace Hopper’s famed 1982 lecture on YouTube

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Amazing Grace —

The lecture featured Hopper discussing future challenges of protecting information.

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Rear Admiral Grace Hopper on Future Possibilities: Data, Hardware, Software, and People (Part One, 1982).

The late Rear Admiral Grace Hopper was a gifted mathematician and undisputed pioneer in computer programming, honored posthumously in 2016 with the Presidential Medal of Freedom. She was also very much in demand as a speaker in her later career. Hopper’s famous 1982 lecture on “Future Possibilities: Data, Hardware, Software, and People,” has long been publicly unavailable because of the obsolete media on which it was recorded. The National Archives and Records Administration (NARA) finally managed to retrieve the footage for the National Security Agency (NSA), which posted the lecture in two parts on YouTube (Part One embedded above, Part Two embedded below).

Hopper earned undergraduate degrees in math and physics from Vassar College and a PhD in math from Yale in 1930. She returned to Vassar as a professor, but when World War II broke out, she sought to enlist in the US Naval Reserve. She was initially denied on the basis of her age (34) and low weight-to-height ratio, and also because her expertise elsewhere made her particularly valuable to the war effort. Hopper got an exemption, and after graduating first in her class, she joined the Bureau of Ships Computation Project at Harvard University, where she served on the Mark I computer programming staff under Howard H. Aiken.

She stayed with the lab until 1949 and was next hired as a senior mathematician by Eckert-Mauchly Computer Corporation to develop the Universal Automatic Computer, or UNIVAC, the first computer. Hopper championed the development of a new programming language based on English words. “It’s much easier for most people to write an English statement than it is to use symbols,” she reasoned. “So I decided data processors ought to be able to write their programs in English and the computers would translate them into machine code.”

Her superiors were skeptical, but Hopper persisted, publishing papers on what became known as compilers. When Remington Rand took over the company, she created her first A-0 compiler. This early achievement would one day lead to the development of COBOL for data processors, which is still the major programming language used today.

“Grandma COBOL”

In November 1952, the UNIVAC was introduced to America by CBS news anchor Walter Cronkite as the presidential election results rolled in. Hopper and the rest of her team had worked tirelessly to input voting statistics from earlier elections and write the code that would allow the calculator to extrapolate the election results based on previous races. National pollsters predicted Adlai Stevenson II would win, while the UNIVAC group predicted a landslide for Dwight D. Eisenhower. UNIVAC’s prediction proved to be correct: Eisenhower won over 55 percent of the popular vote with an electoral margin of 442 to 89.  

Hopper retired at age 60 from the Naval Reserve in 1966 with the rank of commander but was subsequently recalled to active duty for many more years, thanks to congressional special approval allowing her to remain beyond the mandatory retirement age. She was promoted to commodore in 1983, a rank that was renamed “rear admiral” two years later, and Rear Admiral Grace Hopper finally retired permanently in 1986. But she didn’t stop working: She became a senior consultant to Digital Equipment Corporation and “goodwill ambassador,” giving public lectures at various computer-related events.

One of Hopper’s best-known lectures was delivered to NSA employees in August 1982. According to a National Security Agency press release, the footage had been preserved in a defunct media format—specifically, two 1-inch AMPEX tapes. The agency asked NARA to retrieve that footage and digitize it for public release, and NARA did so. The NSA described it as “one of the more unique public proactive transparency record releases… to date.”

Hopper was a very popular speaker not just because of her pioneering contributions to computing, but because she was a natural raconteur, telling entertaining and often irreverent war stories from her early days. And she spoke plainly, as evidenced in the 1982 lecture when she drew an analogy between using pairs of oxen to move large logs in the days before large tractors, and pairing computers to get more computer power rather than just getting a bigger computer—”which of course is what common sense would have told us to begin with.” For those who love the history of computers and computation, the full lecture is very much worth the time.

Grace Hopper on Future Possibilities: Data, Hardware, Software, and People (Part Two, 1982).

Listing image by Lynn Gilbert/CC BY-SA 4.0

We can now watch Grace Hopper’s famed 1982 lecture on YouTube Read More »

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Massive nationwide meat-linked outbreak kills 5 more, now largest since 2011

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Hardy germs —

CDC implores consumers to check their fridges for the recalled meats.

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Listeria monocytogenes.

Enlarge / Listeria monocytogenes.

Five more people have died in a nationwide outbreak of Listeria infections linked to contaminated Boar’s Head brand meats, the Centers for Disease Control and Prevention reported Wednesday.

To date, 57 people across 18 states have been sickened, all of whom required hospitalization. A total of eight have died. The latest tally makes this the largest listeriosis outbreak in the US since 2011, when cantaloupe processed in an unsanitary facility led to 147 Listeria infections in 28 states, causing 33 deaths, the CDC notes.

The new cases and deaths come after a massive recall of more than 7 million pounds of Boar’s Head meat products, which encompassed 71 of the company’s products. That recall was announced on July 30, which itself was an expansion of a July 26 recall of an additional 207,528 pounds of Boar’s Head products. By August 8, when the CDC last provided an update on the outbreak, the number of cases had hit 43, with 43 hospitalizations and three deaths.

In a media statement Wednesday, the CDC says the updated toll of cases and deaths is a “reminder to avoid recalled products.” The agency noted that the outbreak bacteria, Listeria monocytogenes, is a “hardy germ that can remain on surfaces, like meat slicers, and foods, even at refrigerated temperatures. It can also take up to 10 weeks for some people to have symptoms of listeriosis.” The agency recommends that people look through their fridges for any recalled Boar’s Head products, which have sell-by dates into October.

If you find any recalled meats, do not eat them, the agency warns. Throw them away or return them to the store where they were purchased for a refund. The CDC and the US Department of Agriculture also recommend that you disinfect your fridge, given the germs’ ability to linger.

L. monocytogenes is most dangerous to people who are pregnant, people age 65 years or older, and people who have weakened immune systems. In these groups, the bacteria are more likely to move beyond the gastrointestinal system to cause an invasive listeriosis infection. In older and immunocompromised people, listeriosis usually causes fever, muscle aches, and tiredness but may also cause headache, stiff neck, confusion, loss of balance, or seizures. These cases almost always require hospitalization, and 1 in 6 die. In pregnant people, listeriosis also causes fever, muscle aches, and tiredness but can also lead to miscarriage, stillbirth, premature delivery, or a life-threatening infection in their newborns.

Massive nationwide meat-linked outbreak kills 5 more, now largest since 2011 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 »