Somewhere out there, four alien civilizations might already know we exist—and their intentions could be far from friendly. Here's what science really says about it.

According to the simulation theory, our reality isn’t reality but an extremely advanced stimulation. Are we currently living in a simulation controlled by alien civilizations? Find out in this clip ...

Galaxy Quest lovingly parodied Star Trek, its stars and its fans. But did it also become the best Star Trek movie that was ...

These epic, star-spanning adventure stories blend interstellar action with political allegory and romantic drama. Here’s where to start.

The natural disaster that turned Kyirong into a valley of misery for so many actually means Valley of Happiness in Tibetan.

Plenty of sci-fi movies feature aliens and monsters wreaking havoc on humanity, but in these fantastic sci-fi movies, humans ...