A NASA whistleblower claimed that the space agency knowingly covered up proof of alien life captured in everyday photos.

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 ...

When the U.S. was born, humanity was still seven years away from balloon-borne flight. Where might we be another 250 years from now, should the nation be fortunate enough to survive that long?

Every time I see the moon in the sky, it makes me happy. Our natural satellite is so familiar it’s easy to take it for ...

Could the moon become humanity's next home? NASA has a detailed plan to build a first-of-its kind lunar outpost where ...

The Pentagon's latest declassified UAP files, including eyewitness videos and historical documents, have reignited interest ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

Space: 1999 may have offered audiences a glimpse into the future, but its premise was rooted in the past — specifically, in a ...