Over four decades, the Alien franchise has brought many different versions of the xenomorph creature to theaters.

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and living safely—beyond our planet. “I was like, ‘OK, I'm pretty sure that ...

The scientific wonderers at What If analyze the gruesome physical toll that extreme gravity, radiation, and toxic air would ...

Explore the UFO mysteries J. Allen Hynek uncovered with Project Blue Book and how his findings challenged the Air Force's ...