A former CIA-linked physicist's comments about 'four alien species' have reignited UFO conspiracy theories online.

'Interdimensional' mostly refers to entities from parallel dimensions; they don't travel vast distances, but they are believed to manipulate space-time. Stephen Leonardi: Pexels The long-promised ...

The US Government has released a new trove of documents on cases of "unidentified anomalous phenomena" (UAPs)—many of which would have been described in the past as unidentified flying objects or UFOs ...

Experts say the videos released by the US government give no evidence of alien technology or extraterrestrial life.

The Pentagon on Friday released a third batch of vintage classified files related to “flying saucers” and other unidentified anomalous phenomena — better known to most Americans as unidentified flying ...