The imaginary constructions of science fiction fill us with awe at their alien vastness. Which have you explored, and what was the most overwhelming?

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 ...

A pair of young lovers are driving down a dark highway. Suddenly, the car stops and they see a UFO overhead. The teens then pass out when a pair of gray aliens approach their car. Then another ...

This is read by an automated voice. Please report any issues or inconsistencies here. Dropping a tribute to Ridley Scott’s 1979 “Alien” halfway through his franchise-expanding series wasn’t easy. But ...

Adapt or die: How do you grow and evolve to fit into an alien environment? How do you create change in the face of overwhelming power? And how do you tell your extraterrestrial overlords you need a ...