Jay Stratton's memoir, 'Out of the Shadows,' is being published Oct. 13

Donald Trump's latest release of declassified UFO files has renewed scrutiny of one of the most enduring questions in modern science and politics: do aliens exist? The newly published material adds to a growing body of government videos,

The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common alien theories, explained. This voice experience is generated by AI. Learn more.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

This could be why we still haven’t found alien life - Traces left behind by organisms on alien worlds may be too subtle to detect

Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature Astronomy, researchers discuss the consequences of these so-called false-negative results.

Rep. Tim Burchett told Piers Morgan aliens exist, pointing to government briefings, pilot testimony and video evidence shown to him by officials as proof.

How Radio Astronomy Helps Us See the Invisible Cosmos," astrophysicist Emma Chapman describes the hidden corners of space that only radio waves can reveal — and makes the case for contacting aliens.