The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common ...

The enigmatic outline of a pyramid-like structure in the icy wilderness of Antarctica has aroused substantial curiosity and fueled countless conspiracy theories suggesting extraterrestrial involvement ...

Project Blue Beam, a conspiracy theory originating from Serge Monast's 1994 claims, suggests a government-led scheme to ...

Giorgio A. Tsoukalos talks about the Alien Astronaut Theory & the new episodes of "Ancient Aliens" on The History Channel.

The podcaster has frequently expressed an interest in the subject but said Thursday there's one aspect that "doesn't totally ...