So when President Donald Trump threatened on Thursday to cancel Elon Musk's federal contracts, space watchers snapped to ...

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.

NASA is delaying the earliest potential next flight of Boeing Co.’s troubled Starliner spacecraft to 2026, pushing back a key ...

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

The company is developing a larger vehicle, named Helios, that could meaningfully improve the ability of SpaceX's Falcon 9 ...