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.

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

October is shaping up to be a surprisingly intriguing month for sci-fi books, with familiar worlds being reinvented, acclaimed authors launching something completely new and time travel getting more ...

If there are other civilizations in the Universe besides ours, why haven't we yet made contact? Researchers who study this ...

The Dark Forest theory offers a chilling explanation for the Fermi Paradox: alien civilizations may exist everywhere, but survival forces them to remain hidden. In this view, every world in the ...

Following the flow from Chapters 1 through 5, Chapter 6 expands the 'encounter' with AI as an alien intelligence from individual dialogue and co-creation to the design of civilization. In particular, ...

A team of researchers argues that the Moon could have been collecting microscopic fragments of alien technology for billions ...

Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has focused on capturing radio signals that ...