When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.

The Pentagon just released what they're calling never before seen UFO files, including videos, images, and original documents ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

The Great Filter theory suggests advanced civilisations may self-destruct before contacting others, explaining the universe's ...

A newly spotted interstellar visitor just got an unusually close listen from California scientists — in a search for signs of ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

NASA's Perseverance rover has uncovered one of the most intriguing clues yet in humanity's search for life beyond Earth.

Instead of searching the skies for radio signals, scientists suggest the first evidence of an extinct alien civilisation could be buried in lunar soil.

Discover the astonishing microscopic life thriving beneath Antarctica's icy exterior. A new PBS series reveals the groundbreaking research that could transform our understanding of ecosystems and ...