A vacuum Raptor engine was recently test-fired after being "chilled to mimic conditions after a long coast period in space," ...

SpaceX Starship and its Super Heavy booster launching. Watch view of the liftoff in slow motion from a launch tower camera. Footage courtesy SpaceX | mash mix by Space.com's Steve Spaleta ...

Trump had pulled Isaacman's nomination after a falling out with Elon Musk. Isaacman has ties to SpaceX, a company run by Musk ...

Bomb threats shut down polling stations throughout New Jersey Tuesday, and officials have moved some to new election sites.

The flare came from a supermassive black hole that’s 10 billion light years away, making the flash the most distant one observed so far. It hails from a time when the universe was rather young. A ...