The Boeing Starliner’s strange test flight is finally returning to Earth, but it’s empty

US astronaut Barry Wilmore called NASA ground crew on Saturday, asking for help with a repetitive knocking sound that was coming from the Boeing Starliner craft. The interaction was captured by a NASA Space Flight forum member, who included a recording of it in a post that was spotted by Ars Technica.

In the recording, Wilmore asks the NASA crew in Houston to configure their call to show them the noise, which he says is coming from the speaker inside Starliner. Then, a repetitive clanging sound with slight there’s-something-on-the-wing vibes can be heard. The Earthside crew member describes it as sounding “almost like a sonar ping.”

NASA administrator Bill Nelson announced today that US astronauts Sunita Williams and Barry Wilmore will return next February with the SpaceX Crew-9 mission after spending more than 80 days aboard the International Space Station (ISS).

According to NASA Commercial Crew Program manager Steve Stich, “As we got more and more data over the summer and understood the uncertainty of that data, it became very clear to us that the best course of action was to return Starliner uncrewed.” He said NASA found “there was just just too much uncertainty in the prediction of the thrusters.”

Probably you have already heard that astronauts Barry ”Butch” Wilmore and Sunita Williams may not be able to leave on the Boeing Starliner that brought them to the International Space Station. I have been thinking about it in quiet moments — when I wake up in the morning, on hikes, in the shower.

Those guys popped up there on June 5th, and they were supposed to spend a week on the ISS doing normal astronaut stuff and then go home. But apparently the Boeing Starliner was made about as well as the Boeing 737 Max, and so the astronauts have been on an unplanned vacation in orbit. They might be up there until next February — NASA hasn’t made a decision yet.

During a press conference today, NASA representatives confirmed they have a contingency plan to bring astronauts Barry Wilmore and Sunita Williams home from the International Space Station (ISS) early next year. If they’re unable to leave sooner aboard the Boeing Starliner spacecraft that brought them there, the backup plan would rely on SpaceX’s Crew-9 mission, which has had its launch delayed while officials figure out what to do next.

After a successful crewed launch of the Boeing Starliner on June 5th (following several delays), the two astronauts were originally supposed to spend about a week aboard the ISS before parachuting back to Earth. But the Starliner experienced thruster failures and helium leaks while docking with the ISS, plus additional delays that have left the astronauts stuck in orbit for over two months while Boeing and NASA try to determine if the vehicle is still safe to use.

The third attempt at a crewed launch of the Boeing Starliner was a success. On Wednesday at 10:52AM ET, the spacecraft lifted off atop the United Launch Alliance’s Atlas V rocket from Cape Canaveral, Florida, and now has reached a “safe, stable orbit.”

The Starliner will bring NASA astronauts Butch Wilmore and Sunita Williams to the International Space Station about 24 hours from now, where they’ll “test the end-to-end capabilities of the Starliner system, including launch, docking, and return to Earth.” The two astronauts will stay at the ISS for about a week before parachuting down in the western portion of the US.

NASA has officially pushed back the launch of its Orbital Flight-Test 2 until next year, as it continues to work on an oxidizer isolation valve issue on Boeing’s Starliner spacecraft, the agency announced.

The agency said in a blog post that it’s continuing to assess potential launch windows for the mission: “The team currently is working toward opportunities in the first half of 2022 pending hardware readiness, the rocket manifest and space station availability,” according to the post.

Two NASA astronauts originally slated to launch on an upcoming flight of Boeing’s new Starliner spacecraft have been reassigned to an upcoming SpaceX flight instead, as delays continue to push back Starliner’s next flight to space. Astronauts Nicole Mann and Josh Cassada were supposed to be among the first human passengers on Starliner during its first crewed flights in the coming years. Now, they’ll fly together on SpaceX’s fifth crewed mission to the International Space Station, which is slated to take place in the fall of 2022.

Mann and Cassada were first assigned to fly on Starliner in 2018. Mann was supposed to fly on the Starliner’s first crewed test flight, along with Michael Fincke and Butch Wilmore — a critical test to prove that Starliner is safe to carry people. Cassada was slated to fly on the next flight after Mann’s, Starliner’s first official crewed mission, which also includes NASA astronauts Sunita Williams and Jeanette Epps. Both Mann and Cassada are rookie astronauts, while many of the other Boeing flyers have been to space before, except for Epps.

Boeing has postponed the test launch of its uncrewed Starliner astronaut capsule. The delay was caused by a technical issue that popped up after lightning storms on Monday. Mission teams were figuring out whether the issues can be resolved in time for Starliner’s next launch opportunity on Wednesday around noon, but Boeing ruled that out by Tuesday night.

“We’re going to let the data lead our work,” Boeing’s Starliner manager John Vollmer says in a statement. “Our team has worked diligently to ensure the safety and success of this mission, and we will not launch until our vehicle is performing nominally and our teams are confident it is ready to fly.”

Boeing, once a major player in space, has suffered a string of setbacks, failures, and legal challenges in recent years that have chipped away its dominance in the space industry. The company’s space unit has been lapped by Elon Musk’s SpaceX and left to watch on the sidelines as other companies have moved ahead with ambitious programs, from sending astronauts to the International Space Station to returning humans to the surface of the Moon.

On Friday, Boeing will try to mend its reputation during an uncrewed test of its Starliner astronaut capsule to the ISS. This will be the second launch for the capsule, coming a year and a half after its first attempt failed to reach the space station. Eighteen months of grueling technical investigations and a string of leadership shake-ups has brought Boeing back to the launch pad for a $410 million do-over that would put it on track for its first launch with humans aboard later this year. SpaceX, Boeing’s rival in NASA’s Commercial Crew program, is far ahead, with three astronaut missions already under its belt.