A former CIA-linked physicist's comments about 'four alien species' have reignited UFO conspiracy theories online.

MORE: I'm a pastor who attended a secret UFO disclosure meeting. We saw images of 'translucent beings' that chilled me to the bone A former CIA scientist has claimed that there are several alien ...

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

Why do we tend to assume that UFOs are crafts carrying alien beings rather than alien beings themselves? How the UFO ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

New claims that the United States has recovered remains of four separate species of alien life are sending shockwaves throughout the UFO disclosure movement, further drumming up conversations ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Just over a week after the release of the Department of Defense’s first ...

Science fiction stories about “alien” invaders are often political allegories for anxieties around immigration. Now, a government website depicts non-citizens as extraterrestrials.

That little alien emoji staring back from your phone, with its smooth, bulbous head and almond-shaped black eyes, has ...