The White House's mysterious aliens.gov has finally gone live after the domain was registered in March, fueling speculation ...

"Wouldn’t it be wonderful for people to know all of this is true," the Oscar-winning director says in the new trailer.

Astrophysicist Neil deGrasse Tyson speaks with CNN's Dana Bash about "never-before-seen files" on UFOs released by the FBI ...

The Department of War just dumped a huge batch of UFO files, but does it have proof of aliens? Here's what we make of it.

Humanity often ponders the nature of alien life, but rarely considers the inverse: what would extraterrestrials think of us? For theoretical physicist Avi Loeb, the answer is bleak. "If I were looking ...

For generations, human beings have wondered: What would alien life from another planet be like? But we rarely ask the opposite: What would they think of us? It's a question that can produce some, well ...