These shocking UFOs have been spotted over some of the biggest cities in the U.S. See more in this compilation from The Proof is Out There.

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

NASA's relationship with UFOs has evolved alongside broader changes in public and government interest in unexplained ...

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

The Pentagon on Friday released a new group of documents and videos related to UFOs, or UAPs, with 72 more documents, images ...

National attention on UFOs has shifted in recent years, especially after the US government in the past decade has released ...

Mick West, a UFO investigator, suggests using modern tools for analysing UAP and suspected alien sightings, and ruling out ...

The Pentagon released its fourth batch of UFO files Friday following President Trump’s declassification order, including ...

Pols and experts claim that there’s a long-unheard secret tape of an “Invasion of Washington” UFO briefing – and they say the ...

Kansas City has long been a hotbed of activity, says Margie Kay, director of the Missouri chapter of the Mutual UFO Network ...

Pilot Kenneth Arnold took flight from Chehalis, Washington in his single-engine airplane, looking for a missing military ...