Do little green men exist? Was 'Men In Black' a documentary? Prediction markets price the odds of the U.S. confirming aliens before 2027 - here’s why traders overwhelmingly expect a government ...

From Interstellar to 2001: A Space Odyssey, these are the best hard science-fiction movies, ranked.

Stacker compiled a collection of 70 images that show how the '70s changed the world. See photos of the decade's defining ...