A UFO is idiomatic for an Unidentified Flying Object. Most often, they are identified as Alien Spacecraft. But when it comes to full technicality, anything can be a UFO, provided...
- Glowing UFO Videotaped over Maghull, Great Britain
- Madison, Ohio-Kuhn/Frightened Dog Case
- The Mars and Earth Connection
- Mining complex on the moon? UFO hunter claims structures visible on lunar surface
- Guided by Aliens: Ancient Tribe Shames NASA by Revealing Unknown Star System