A second batch of previously classified files on reported UFO sightings has been released by the US Department of Defence.

The Pentagon discloses scores of UFO files with reported sightings of spheres, discs and fireballs spanning nearly 80 years.

A fascinating, unclassifiable orb found in the Gulf of Alaska is not an alien object, as some speculated, but the remains of ...

Add Yahoo as a preferred source to see more of our stories on Google. A remote-controlled drone over an ocean shoreline. - Credit: Getty Images For the past month, residents of the northeast and ...

Viral videos of glowing orbs in the sky have sparked debate after Pastor Alan Nolan suggested they might be spiritual ...

The Pentagon released a second batch of videos of unidentified flying objects ...