One of NASA’s two previously stuck astronauts has retired from the space agency, less than five months after his unexpectedly long spaceflight came to an end. NASA announced Butch Wilmore’s departure ...

There might’ve been life on Mars after all. Although it resembles a coral typically found at the bottom of the ocean, it was a piece of rock that a NASA spacecraft — Curiosity rover — recently ...

Call it a nuclear moonshot: The U.S. aims to deliver a reactor to the lunar surface and beat a push by China and Russia to do the same. In August, NASA Acting Administrator Sean Duffy directed the ...