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

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.

(Esben_H/iStock/Getty Images Plus) The Fermi paradox asks: If there are other civilizations in the Universe besides ours, why ...

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

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 ...

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 ...

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.

Naperville Public Library invites readers to check out the “Thick as Thieves” recommendations as part of its Amazing Book ...

Captain Kirk's speech in 'Return to Tomorrow' says more about what Star Trek stands for than any other line in the original series.

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

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, ...