The Starliner is scheduled to undock from the International Space Station and to make its way back to Earth at 6:04PM Eastern time today, September 6. If the weather cooperates and the spacecraft leaves the ISS as planned, it will be landing at White Sands Space Harbor in New Mexico with the help of parachutes to slow its descent and inflated airbags at around 12:03AM ET on September 7. While the ground teams at Starliner Mission Control in Houston and at Boeing Mission Control Center in Florida can control the spacecraft remotely if needed, it will be an uncrewed, fully autonomous flight for the Starliner. 

NASA recently announced that Butch Wilmore and Suni Williams, the astronauts that headed to the ISS aboard the Starliner for its first crewed flight, will be coming home on a SpaceX Crew Dragon instead. Wilmore and Williams flew to the ISS in June and were only supposed to spend a little more than a week on the orbiting laboratory. On the way there, however, five of the spacecraft's maneuvering thrusters had failed, and its helium leak problem that previously caused its launch to be pushed back had worsened. Engineers on the ground conducted tests with help from the astronauts on the ISS to determine whether the Starliner was safe for the crew to ride back to Earth. In the end, NASA decided that it's safer for Wilmore and Williams to come home on a SpaceX vehicle, because "there was too much uncertainty" around the Starliner's thrusters. 

The space agency will cover Starliner's return live on NASA+, the NASA app, its website, and you can also watch it below. Coverage of the undocking procedure will start at 5:45PM ET, while coverage for the spacecraft's deorbit burn, entry and landing will start at 10:50PM. NASA will also livestream Starliner's landing on September 7, starting at 12AM ET.

As for the SpaceX Crew-9 mission that's replacing the Boeing's vehicle on the ISS, it's scheduled to launch no earlier than September 24. Instead of flying with four astronauts as planned, it will fly with two — NASA astronaut Nick Hague and Roscosmos cosmonaut Aleksandr Gorbunov — to leave two seats empty for its return flight with Wilmore and Williams in February 2025. 

On August 24, NASA will finally announce how Butch Wilmore and Suni Williams, the astronauts that flew to the ISS aboard Boeing's Starliner, will be coming home. Earlier this month, the agency said it was already in talks with SpaceX about the possibility of giving the astronauts two seats aboard an upcoming Crew Dragon mission. While NASA was making sure that the option was available, it continued asking Boeing for data to prove that the Starliner is safe to ride back to Earth. The Starliner's batteries won't last forever, though, and the agency needs to make a decision soon. 

In its announcement, NASA said that on August 24, its leadership will make a final examination of the data Boeing gathered through various ground tests and simulations by engineers with help from Williams and Wilmore. An hour later, at around 1PM Eastern time, it will hold a news conference to broadcast its official decision. You can watch the event on NASA+, NASA Television, the NASA app, YouTube and the agency’s website, but we'll also keep you updated. 

The Starliner's first crewed mission blasted off the space in June on top of a United Launch Alliance Atlas V rocket after several delays. It was only supposed to stay docked to the ISS for eight days before making its way back home with both astronauts. During its flight to the orbiting lab, however, five of its maneuvering thrusters had failed. The helium leak that caused Boeing and NASA to scrub its launch also came back and had even worsened. Over the past few months, engineers conducted tests and simulations on the ground to provide NASA with the data it wanted. "We are letting the data drive our decision making relative to managing the small helium system leaks and thruster performance we observed during rendezvous and docking," said Steve Stich, manager of NASA's Commercial Crew Program, back in June. 

If NASA does decide to go with its backup plan of making Wilmore and Williams hitch a ride on the Crew Dragon, then the Starliner will be coming back to Earth without a crew onboard. It's still unclear when the Starliner is making its way back to the planet, but it likely couldn't come soon enough for the company. Aside from the fact that the Starliner's batteries are running out, Boeing reported earlier this month that it took another $125 million in losses due to the spacecraft's delayed return. Wilmore and Williams will then be coming home as part of the SpaceX Crew-9 mission, the same mission that had to be delayed because Starliner was still taking up one of the two slots on the ISS that can accommodate astronaut capsules. The Crew-9 capsule won't be flying back to Earth until February 2025, though, so the astronauts' supposed eight-day trip will turn into an eight-month stint. 

SpaceX's Crew-9 flight for NASA was supposed to take off on August 18, but the agency has just announced that its target launch date was moved to no earlier than September 24. The delay will give NASA and Boeing more time to finalize their plans for Boeing Starliner's return, the agency said in its announcement. What it didn't say was that while eight space ships can attach themselves to the ISS at one time, the US segment of the space station only has two docking ports that can accommodate astronaut capsules. Both of them are still occupied, since Starliner's supposed eight-day stay has stretched on for months. 

NASA said that Starliner's ground teams are still analyzing the results of all the testing they've been putting the spacecraft through, including a recent hot-fire test. They still need to confirm if it's ready to bring back astronauts Butch Wilmore and Sunita Williams back to Earth before a return flight could be scheduled. Boeing's first crewed Starliner mission launched in June and was only slated to stay for a few days to determine whether it was ready for regular flights to the station. However, five of its thrusters failed on its approach to the ISS, and only one came back online. The helium leak that forced Boeing and NASA to push back its takeoff in the past had worsened, as well. 

In a filing with the US Securities and Exchange Commission, Boeing revealed that it took another $125 million in losses due to the Starliner's delayed return and the extensive testing that had to be conducted to ensure its readiness. The company said a few days ago, though, that it supports NASA's requests for additional testing and that it "remains confident in the Starliner spacecraft and its ability to return safely with crew."

Boeing has revealed that it has taken another $125 million in losses as a result of its Starliner spacecraft's delayed return from the ISS. As SpaceNews reports, the company has revealed the losses in a filing with the US Securities and Exchange Commission, along with more details about its earnings for the second quarter of the year. The company already posted $288 million in losses "primarily as a result of delaying" the Crew Flight Test mission in 2023. 

The first crewed Starliner flight took off in June with NASA astronauts Butch Wilmore and Sunita Williams on board. Boeing's spacecraft was only supposed to stay docked to the ISS for eight days before ferrying the astronauts back to Earth, but issues with its hardware prevented the mission from sticking to its original timeline. 

The company had to examine and find what caused the Starliner's degraded maneuvering thrusters while it was approaching the ISS. In addition, the helium leak that caused several delays to the spacecraft's launch seemed to have worsened, as well. Since June, the company has been putting the spacecraft through a series of tests. Just a few days ago, on July 27, it completed a hot fire test of the Starliner's reaction control system jets and made sure that the vehicle's helium leak rates remain within the acceptable margin. The tests were conducted with Williams and Wilmore onboard, because they're part of the preparations for the spacecraft's flight back home. 

NASA said the tests' results are still being reviewed. But once Boeing and the agency ensure that the Starliner is ready, they will set a date for the Starliner and the astronauts' return flight. 

NASA's Perseverance rover has been collecting samples from Mars since 2021, but one of its most recently collected rocks could help it achieve its goal of finding evidence of ancient life on the planet. Nicknamed Cheyava Falls after the tallest waterfall in the Grand Canyon, the 3.2 feet by 2 feet sample contains "chemical signatures and structures" that could've been formed by ancient microbial life from billions of years ago. 

Perseverance collected the rock on July 21 from what was once a Martian river valley carved by flowing water long ago. The sample, which you can see in close up below and from afar at the center of the image above, exhibits large white calcium sulfate veins running along its length. They indicate that water did run through the rock at one point. 

More importantly, it contains millimeter-size marks that look like "leopard spots" all over its central reddish band. On our planet, those spots could form on sedimentary terrestrial rocks when there are chemical reactions that turn hematite, one of the minerals responsible for Mars' reddish color, to white. Those reactions can release iron and phosphate, which could've served as an energy source for microbes. 

The rover's Planetary Instrument for X-ray Lithochemistry (PIXL) tool already determined that the black rings around the spots contain iron and phosphate. However, that doesn't automatically mean that the rock truly did serve as a host for ancient microbes. 

NASA/JPL-Caltech/MSSS

The spots could've been formed by non-biological processes, and that's something scientists will have to figure out. "We cannot say right now that we have discovered life on Mars,” Katie Stack Morgan, the deputy project scientist, said. "But what we are saying is that we have a potential biosignature, which is a set of features that could have a biological origin but do need further study and more data." 

NASA still has to bring back the samples Perseverance had collected to our planet, including Cheyava Falls. As The New York Times notes, the Mars Sample Return mission is years behind schedule and would not be able to bring back rocks from the red planet until 2040 instead of in the early 2030's like originally planned. NASA recently asked aerospace companies for alternative solutions on how to get the samples to Earth much sooner and will finance their studies due later this year. Scientists will also have to conduct extensive testing to rule out contamination and non-biological processes, as well as other possible explanations for how the leopard spots had formed, before they can proclaim that they're indeed evidence of ancient Martian life.