The X-Men broke out in the 1980s and became Marvel's most popular superhero book, and here are the best villains they fought.

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.

Take a drive to the CIA’s Area 51 – a route with more UFO sightings and unexplained mysteries than anywhere else on Earth ...

The heaviest sci-fi books of all time include classics like Brave New World and Nineteen Eighty-Four alongside newer novels ...

A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...

In June 1947, Kenneth Arnold saw something strange in the sky. What he saw sparked a national UFO craze-but it was far from ...

To determine the 50 biggest box-office winners of all time, Stacker used data from Box Office Mojo (last updated May 2022).

Left to Right: Steven Yeun in "Nope," the alien in Steven Spielberg's "E.T." and Scarlett Johansson in "Under the Skin" (Universal Pictures / A24) It didn’t take long for stories about ...

The study of UAP suffers from a nearly debilitating signal-to-noise ratio. The literature on the phenomenon has for decades been saturated with sensationalism and speculation. Navigating this ...