Did a flying saucer just land at NASA? It sure looks like it.

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

For decades, humanity has searched the universe for signs of alien life — but some scientists warn that finding it may come with terrifying consequences. This video explores NASA’s Voyager missions, ...

As NASA prepares for long-term moon bases, scientists are working on how to grow food in lunar soil and deal with razor-sharp ...

Stacker compiled a collection of 70 images that show how the '70s changed the world. See photos of the decade's defining ...

A three-armed spacecraft is rushing to the rescue of a NASA telescope that’s in danger of crashing back to Earth.

NASA and Arizona-based startup Katalyst launched a robotic spacecraft over the Pacific on Thursday on a mission to rescue an ...

NASA on Tuesday plans to launch a mission to save its Neil Gehrels Swift Observatory. A spacecraft is expected to push the ...

NASA is racing to save its Swift telescope from falling back to Earth with a daring rescue mission. The salvage effort gets ...

Ron Howard's dramatization of NASA's titular lunar mission, which soon turned into a desperate fight for survival, was ...