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

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

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

A strange UFO sighting in Susa Valley, Italy, leads to the construction of Sacra di San Michele, and according to theorists, ...

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

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

Stacker compiled a ranking of cities with the most UFO sightings in Massachusetts using data from the National UFO Reporting Center.