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

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.

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.

The Trump administration announced the release of newly declassified Unidentified Anomalous Phenomena records, launching a Department of War website to provide public access to government files as part of a transparency push.

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.

Former President Barack Obama has been forced to clarify his bombshell claim that aliens truly do exist. The former commander-in-chief initially made the extraordinary revelation over the weekend during an appearance on the No Lie With Brian Tyler Cohen ...