SpaceX's Dragon capsule docked onto the ISS and will return to Earth in February. Photo via SpaceX

The two astronauts stuck at the International Space Station since June welcomed their new ride home with Sunday’s arrival of a SpaceX capsule.

SpaceX launched the rescue mission on Saturday with a downsized crew of two astronauts and two empty seats reserved for Butch Wilmore and Suni Williams, who will return next year. The Dragon capsule docked in darkness as the two craft soared 265 miles (426 kilometers) above Botswana.

NASA switched Wilmore and Williams to SpaceX following concerns over the safety of their Boeing Starliner capsule. It was the first Starliner test flight with a crew, and NASA decided the thruster failures and helium leaks that cropped up after liftoff were too serious and poorly understood to risk the test pilots’ return. So Starliner returned to Earth empty earlier this month.

The Dragon carrying NASA’s Nick Hague and the Russian Space Agency’s Alexander Gorbunov will remain at the space station until February, turning what should have been a weeklong trip for Wilmore and Williams into a mission lasting more than eight months.

Two NASA astronauts were pulled from the mission to make room for Wilmore and Williams on the return leg.

“I just want to say welcome to our new compadres,” Williams, the space station commander, said once Hague and Gorbunov floated inside and were embraced by the nine astronauts awaiting them.

Hague said it was a smooth flight up. “Coming through the hatch and seeing all the smiles, and as much as I've laughed and cried in the last 10 minutes, I know it's going to be an amazing expedition," he said.

NASA likes to replace its station crews every six months or so. SpaceX has provided the taxi service since the company’s first astronaut flight in 2020. NASA also hired Boeing for ferry flights after the space shuttles were retired, but flawed software and other Starliner issues led to years of delays and more than $1 billion in repairs.

Starliner inspections are underway at NASA’s Kennedy Space Center, with post-flight reviews of data set to begin this week.

“We’re a long way from saying, ‘Hey, we’re writing off Boeing,’” NASA’s associate administrator Jim Free said at a pre-launch briefing.

The arrival of two fresh astronauts means the four who have been up there since March can now return to Earth in their own SpaceX capsule in just over a week, bringing the station's crew size back down to the normal seven. Their stay was extended a month because of the Starliner turmoil.

Although Saturday’s liftoff went well, SpaceX said the rocket’s spent upper stage ended up outside its targeted impact zone in the Pacific because of a bad engine firing. The company has halted all Falcon launches until it figures out what went wrong.was extended a month because of the Starliner turmoil.

After almost three months, the decision finally came down from NASA’s highest ranks on Saturday. Photo via Vanessa Wyche/LinkedIn

NASA decides to keep 2 astronauts in space until February, nixes return on troubled Boeing capsule

game plan set

NASA decided Saturday it’s too risky to bring two astronauts back to Earth in Boeing’s troubled new capsule, and they'll have to wait until next year for a ride home with SpaceX. What should have been a weeklong test flight for the pair will now last more than eight months.

The seasoned pilots have been stuck at the International Space Station since the beginning of June. A cascade of vexing thruster failures and helium leaks in the new capsule marred their trip to the space station, and they ended up in a holding pattern as engineers conducted tests and debated what to do about the flight back.

After almost three months, the decision finally came down from NASA’s highest ranks on Saturday. Butch Wilmore and Suni Williams will come back in a SpaceX capsule in February. Their empty Starliner capsule will undock in early September and attempt to return on autopilot with a touchdown in the New Mexico desert.

"We are grateful to Butch and Suni for taking on new roles as International Space Station crew members and their families for supporting them in this change to mission plan. Butch and Suni will do good science, technology and STEM engagements on ISS and the entire NASA family will continue to support them during their increment," NASA's Johnson Space Center Director Vanessa Wyche wrote on LinkedIn. "I am personally proud of all of the people who support our human spaceflight endeavors all across the globe. Together, we ensure the safe exploration of space."

As Starliner’s test pilots, the pair should have overseen this critical last leg of the journey.

“A test flight by nature is neither safe nor routine,” said NASA Administrator Bill Nelson. The decision "is a result of a commitment to safety.”

Nelson said lessons learned from NASA's two space shuttle accidents played a role. This time, he noted, open dialogue was encouraged rather than crushed.

“This has not been an easy decision, but it is absolutely the right one,” added Jim Free, NASA's associate administrator.

It was a blow to Boeing, adding to the safety concerns plaguing the company on its airplane side. Boeing had counted on Starliner’s first crew trip to revive the troubled spacecraft program after years of delays and ballooning costs. The company had insisted Starliner was safe based on all the recent thruster tests both in space and on the ground.

Boeing did not participate in Saturday's news conference by NASA, but released a statement.

“Boeing continues to focus, first and foremost, on the safety of the crew and spacecraft," reads the statement. The company said it is preparing the spacecraft “for a safe and successful return.”

Rand Corp.'s Jan Osburg, a senior engineer who specializes in aerospace and defense, said NASA made the right choice. “But the U.S. is still left with egg on its face due to the Starliner design issues that should have been caught earlier."

Wilmore, 61, and Williams, 58, are both retired Navy captains with previous long-duration spaceflight experience. Before their June 5 launch from Cape Canaveral, Wilmore and Williams said their families bought into the uncertainty and stress of their professional careers decades ago.

During their lone orbital news conference last month, the astronauts said they had trust in the thruster testing being conducted. They had no complaints, they added, and enjoyed pitching in with space station work.

Wilmore's wife, Deanna, said she and their daughters, along with family and friends, “were praying for a safe return on whatever spacecraft that may be." While they are disappointed that he will be away longer, “we know that it's the Lord's plan,” she said via text.

Flight operations director Norm Knight said he talked to the astronauts Saturday and they fully support the decision to postpone their return.

There were few options.

The SpaceX capsule currently parked at the space station is reserved for the four residents who have been there since March. They will return in late September, their routine six-month stay extended a month by the Starliner dilemma. NASA said it would be unsafe to squeeze two more into the capsule, except in an emergency.

The docked Russian Soyuz capsule is even tighter, capable of flying only three — two of them Russians wrapping up a yearlong stint.

So Wilmore and Williams will wait for SpaceX's next taxi flight. It’s due to launch in late September with two astronauts instead of the usual four. NASA is yanking two to make room for Wilmore and Williams on the return flight in late February.

NASA said no serious consideration was given to asking SpaceX for a quick stand-alone rescue. Last year, the Russian Space Agency had to rush up a replacement Soyuz capsule for three men whose original craft was damaged by space junk. The switch pushed their six-month mission to just over a year.

Former Canadian astronaut Chris Hadfield, applauded the decision via X: “Good to err on the side of caution for astronaut lives.” Long missions are “what astronauts work their entire career for. I’d take it in a heartbeat!”

Starliner’s woes began long before its latest flight.

Bad software fouled the first test flight without a crew in 2019, prompting a do-over in 2022. Then parachute and other issues cropped up, including a helium leak in the capsule’s propellant system that nixed a launch attempt in May. The leak eventually was deemed to be isolated and small enough to pose no concern. But more leaks sprouted following liftoff, and five thrusters also failed.

All but one of those small thrusters restarted in flight. But engineers were perplexed by ground testing that showed a thruster seal swelling and obstructing a propellant line. They theorized the seals in orbit may have expanded and then reverted to their normal size. Officials said the results marked the turning point, as their concerns grew.

With all the uncertainty about how the thrusters might perform, “There was too much risk for the crew," Steve Stich, NASA's commercial crew program manager, told reporters.

These 28 thrusters are vital. Besides needed for space station rendezvous, they keep the capsule pointed in the right direction at flight’s end as bigger engines steer the craft out of orbit. Coming in crooked could result in catastrophe.

With the Columbia disaster still fresh in many minds — the shuttle broke apart during reentry in 2003, killing all seven aboard — NASA made an extra effort to embrace open debate over Starliner's return capability.

Despite Saturday's decision, NASA isn’t giving up on Boeing. Nelson said he is “100%” certain that Starliner will fly again.

NASA went into its commercial crew program a decade ago wanting two competing U.S. companies ferrying astronauts in the post-shuttle era. Boeing won the bigger contract: more than $4 billion, compared with SpaceX’s $2.6 billion.

With station supply runs already under its belt, SpaceX aced its first of now nine astronaut flights in 2020, while Boeing got bogged down in design flaws that set the company back more than $1 billion. NASA officials still hold out hope that Starliner’s problems can be corrected in time for another crew flight in another year or so.

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Axiom Space-tested cancer drug advances to clinical trials

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A cancer-fighting drug tested aboard several Axiom Space missions is moving forward to clinical trials.

Rebecsinib, which targets a cancer cloning and immune evasion gene, ADAR1, has received FDA approval to enter clinical trials under active Investigational New Drug (IND) status, according to a news release. The drug was tested aboard Axiom Mission 2 (Ax-2) and Axiom Mission 3 (Ax-3). It was developed by Aspera Biomedicine, led by Dr. Catriona Jamieson, director of the UC San Diego Sanford Stem Cell Institute (SSCI).

The San Diego-based Aspera team and Houston-based Axiom partnered to allow Rebecsinib to be tested in microgravity. Tumors have been shown to grow more rapidly in microgravity and even mimic how aggressive cancers can develop in patients.

“In terms of tumor growth, we see a doubling in growth of these little mini-tumors in just 10 days,” Jamieson explained in the release.

Rebecsinib took part in the patient-derived tumor organoid testing aboard the International Space Station. Similar testing is planned to continue on Axiom Station, the company's commercial space station that's currently under development.

Additionally, the drug will be tested aboard Ax-4 under its active IND status, which was targeted to launch June 25.

“We anticipate that this monumental mission will inform the expanded development of the first ADAR1 inhibitory cancer stem cell targeting drug for a broad array of cancers," Jamieson added.

According to Axiom, the milestone represents the potential for commercial space collaborations.

“We’re proud to work with Aspera Biomedicines and the UC San Diego Sanford Stem Cell Institute, as together we have achieved a historic milestone, and we’re even more excited for what’s to come,” Tejpaul Bhatia, the new CEO of Axiom Space, said in the release. “This is how we crack the code of the space economy – uniting public and private partners to turn microgravity into a launchpad for breakthroughs.”

Chevron enters the lithium market with major Texas land acquisition

to market

Chevron U.S.A., a subsidiary of Houston-based energy company Chevron, has taken its first big step toward establishing a commercial-scale lithium business.

Chevron acquired leaseholds totaling about 125,000 acres in Northeast Texas and southwest Arkansas from TerraVolta Resources and East Texas Natural Resources. The acreage contains a high amount of lithium, which Chevron plans to extract from brines produced from the subsurface.

Lithium-ion batteries are used in an array of technologies, such as smartwatches, e-bikes, pacemakers, and batteries for electric vehicles, according to Chevron. The International Energy Agency estimates lithium demand could grow more than 400 percent by 2040.

“This acquisition represents a strategic investment to support energy manufacturing and expand U.S.-based critical mineral supplies,” Jeff Gustavson, president of Chevron New Energies, said in a news release. “Establishing domestic and resilient lithium supply chains is essential not only to maintaining U.S. energy leadership but also to meeting the growing demand from customers.”

Rania Yacoub, corporate business development manager at Chevron New Energies, said that amid heightening demand, lithium is “one of the world’s most sought-after natural resources.”

“Chevron is looking to help meet that demand and drive U.S. energy competitiveness by sourcing lithium domestically,” Yacoub said.

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This article originally appeared on EnergyCapital.