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. 

This article originally appeared on Engadget at https://www.engadget.com/science/space/boeings-starliner-is-coming-back-without-a-crew-on-september-6-140023545.html?src=rss

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. 

This article originally appeared on Engadget at https://www.engadget.com/science/space/nasa-will-soon-announce-whether-starliners-astronauts-are-coming-back-on-a-spacex-vehicle-120049271.html?src=rss