A new report details that the number of sightings of Unidentified Anomalous Phenomena is increasing as enthusiasts are searching for a chance to connect with the outrageous mysteries of the universe.

It’s not enough with the vortices, already? Apparently not. The night-vision-goggles-wearing folks behind this event promise “UFOs darting about in the nighttime sky” and “huge motherships launch[ing] ...

Another content update has hit No Man's Sky for all players. The Relics update adds prehistoric alien bones for excavation on alien planets, which have some new types of Guardians. Hello Games isn't ...

On Nov. 5, 1975, Travis Walton stepped out of a truck to gain a closer look at something strange. In the distance, he could hear six of his logging crewmates urging him to come back inside. As Walton ...

Common misidentifications: BBC Sky at Night outlines 17 natural and man-made phenomena that are frequently mistaken for UFOs. From meteors to flares: Explanations include meteor fireballs, lens flares ...

When pilot Kenneth Arnold took off from Chehalis, Washington, in his single-engine airplane one afternoon in June 1947, he was looking for a lost military aircraft that had crashed. But what he found ...