Here's a rundown of 21 celebrities who believe aliens are real, and what they've said about our extraterrestrial neighbors.

Disclosure Day, the upcoming sci-fi movie from director Steven Spielberg, revolves around a plot to prove that aliens exist. Many fans have taken this to heart and believe that Spielberg is teasing ...

Steven Spielberg sat down with E! News to talk about his lifelong belief in extraterrestrial life ahead of his upcoming film Disclosure Day.