Many experiences trace back to sleep paralysis, where people wake up unable to move and the mind fills the gap with terrifying imagery. To the person living it, the event feels completely real.

Researchers say they have conducted "the first experiment to ever prove that close encounters with UFOs and extraterrestrials are a product of the human mind." In a sleep study by the Out-Of-Body ...

Since the days of classic movies like Invasion of the Body Snatchers and War of the Worlds, aliens have been a cornerstone of the science fiction genre. Covering everything from humanity making first ...