What would you do with an enormous fortune at your fingertips? These lucky billionaires don’t have to daydream; they’re ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Orbital dynamics show that President Trump’s pledge to land astronauts on Mars couldn’t happen until 2029 at the earliest.

SpaceX has delivered a new animated look at the launch of Starship to Mars. See the launch, Super Heavy booster re-entry and ...