As the peerless "Aliens" turns 40, here are 26 reasons it's still the greatest sci-fi action movie of all time.

Researchers found this material on the meteorite, which entered Earth's atmosphere moving faster than the speed of sound.

If someone showed you photos of Mono Lake without context, you’d probably guess they were filming the next big space epic ...

From The Martian to The Hunger Games, Project Hail Mary to Station Eleven, these sci-fi books have shaped the genre over the ...