Crop circles became one of the strangest mass mysteries of the 1980s as mysterious formations began appearing across rural England. UFO believers claimed aliens were communicating through massive ...

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

Famed astrophysicist Neil deGrasse Tyson joins Saturday TODAY to chat about this new book “Take Me to Your Leader: Perspectives on Your First Alien Encounter” and reveals who he thinks aliens should ...