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    • Astronauts confident Boeing space capsule can safely return them to Earth, despite failures

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    Two astronauts who should have been back on Earth weeks ago said Wednesday that they’re confident that can return them safely, despite a string of vexing breakdowns.

    NASA test pilots launched aboard Boeing’s new Starliner capsule early last month, the first people to ride it. Helium leaks and thruster failures almost derailed their arrival at the International Space Station, and have kept them there much longer than planned. Now the earliest they could return may be the end of July, officials said.

    In their first news conference from orbit, the pair said they expect to return once thruster testing is complete here on Earth. They said they’re not complaining about getting extra time in orbit and are enjoying helping the station crew. Both have previously spent stints at the orbiting lab, which is also home to seven others.

    “I have a real good feeling in my heart that the spacecraft will bring us home, no problem," Williams told reporters.

    The test flight should have lasted eight days, ending on June 14.

    director Steve Stich said the earliest the Starliner astronauts might return is the end of July. The goal is to get them back before SpaceX delivers a fresh crew in mid-August, but that, too, could change, he noted.

    This week, NASA and Boeing are trying to duplicate the Starliner's thruster problems on a brand-new unit at , one of the prime landing sites in the U.S. western desert. The trouble is in the propulsion system, used to manoeuvre the spacecraft.

    Five thrusters failed as the capsule approached the space station on June 6, a day after liftoff. Four have since been reactivated. Wilmore said there should be enough working thrusters to get him and Williams out of orbit. There are also bigger engines that could fill in, if necessary.

    “That mantra you’ve heard, failure is not an option, that’s why we are staying here now," Wilmore said. “We trust that the tests that we’re doing are the ones we need to do to get the right answers, to give us the data that we need to come back.â€

    Boeing and NASA consider the ground tests essential to determine what might have gone wrong since that part of the capsule — the service module — is discarded before landing. The leaks are located in this disposable section.

    A U.S. flag displayed from a window of the Boeing Starliner spacecraft docked to the International Space Station on Tuesday, July 2, 2024. (NASA via AP) So far, testing has not replicated the hot temperatures reached during the flight, according to Stich. Managers want to make sure the suspect thrusters are not damaged, before bringing Starliner back. They were fired more frequently than anticipated early in the flight, and the extra demand on them may have caused them to fail, Stich noted.

    At the same time, ground tests are being conducted to better understand the helium leaks, which could stem from bad seals. Officials have previously said there is ample helium left for the trip home.

    Hurricane Beryl slowed some of the work. in Houston, home to the control centers for both NASA and Boeing, was closed earlier this week to all but the most critical staff.

    Boeing's Mark Nappi stressed that in an emergency, Starliner and its crew could return right now. While the company does not believe the thrusters are damaged, "we want to fill in the blanks and run this test to assure ourselves of that."

    NASA ordered up the Starliner and a decade ago for astronaut flights to and from the space station, paying each company billions of dollars. SpaceX's first taxi flight with astronauts was in 2020. Boeing's first crew flight was repeatedly delayed because of software and other issues.

    There have been no discussions with SpaceX about sending up a rescue capsule, Stich said.

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