For decades, people who reported UFO sightings have described encounters with mysterious visitors dressed entirely in black.

One pilot's offhand description in 1947 started a national obsession that never quit.

Speaking for the first time since a chilling experience four decades ago, Paul Jones and his mum Daphne reveal how their trip ...

If you're a skeptic, these UFO sightings will convince you that the truth is out there—and it may not be from Earth.

This memo is out of this world. Mysterious sightings of ‘three to four-foot tall’ beings decked out in space suits and helmets were reported by witnesses decades ago, newly released Pentagon files ...

Military and commercial pilots are increasingly treated as star witnesses in UFO debates, but psychologists warn their dramatic testimonies cannot, on their own, prove alien visitors.