Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

The latest files released by the US Department of War documenting the extraterrestrial, unidentified aerial phenomena (UAP), and unidentified flying objects (UFOs) have revived the conspiracy theories ...

"A celebration so bright it reached all the way to space!" ...

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

For decades, the moon was seen as a barren, bone-dry world with no atmosphere, no liquid water, no magnetic shield, and extreme swings in temperature. The idea that it could ever support life seemed ...

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

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

The Transporter-17 rideshare mission is scheduled to lift off at 3:10 a.m. ET on Tuesday (July 7).

The Pentagon's latest declassified UAP files, including eyewitness videos and historical documents, have reignited interest ...

Space exploration was a major theme of a state House hearing on Tuesday, even as the budget deadline looms over lawmakers.

From insects to the moon, people have mistaken very Earthly phenomena for UFOs many times.

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.