While the Starliner's first flight didn't exactly go to plan, both NASA and Boeing still hope the spacecraft can one day fly ...

On the 1-year anniversary of the Starliner's doomed launch, revisit the biggest moments of a spaceflight mission that ...

Butch Wilmore and Suni Williams, the U.S. astronauts left on the International Space Station last year by Boeing's troubled ...

NASA astronauts Williams and Wilmore revealed they feared not making it home after Starliner thruster failures extended their ...

NASA astronaut Sunita Williams reveals post-space struggle: severe fatigue made early mornings tough—until a 4 AM ...

Space science experts told ABC News SpaceX has been essential to NASA’s missions and the breakdown of a relationship would leave a hole that would be hard to fill.

SpaceX's dominance in space operations leaves NASA and the Defense Department with limited alternatives for critical missions ...

Elon Musk is threatening to decommission a capsule used to take astronauts and supplies to the International Space Station for NASA ...

Propulsion system issues on Boeing’s Starliner forced NASA ... and Russian capsules that flew uncrewed missions before putting humans aboard. She and NASA are pushing for that outcome, Williams ...