Yet the key insight lies not in what was found, but in what the analysis revealed about the scale of previous searches.

R L Drake explores the Fermi Paradox: why, given the Milky Way's billions of potentially habitable planets and the Drake Equation's estimate of 12,500 possible ...

President Donald Trump is set to give the American public a close encounter of an unprecedented kind by finally revealing definitive proof that aliens and UFOs do exist – and his historic speech is ...

In searches for past and present Martian life, some scientists say we’ve been too cautious to see what’s right in front of us ...

Sometimes, "unidentified" means just what it sounds like.

Could intelligent alien civilizations really exist somewhere beyond Earth? As advanced telescopes continue discovering new potentially habitable worlds every year, that possibility seems more ...

When NASA scientists need to test equipment or study environments that might exist on Mars, they don’t always have to leave ...

Between biosignatures and technosignatures lie noosignatures, and some scientists think they could help us find alien life ...

From the Wow! Signal and mysterious UFO footage to Europa, Enceladus, and Titan, scientists have spent decades evaluating the ...

Tiny fossils from Earth’s deep past may reveal when cellular complexity first emerged. Their survival could reshape both ...

Ultra-weak ‘biophotons’ might be used to diagnose disease, or could even represent a new signalling mechanism in cells.