Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

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

Steven Spielberg's new blockbuster coincides with real-world disclosures about the government's investigation of unidentified phenomena. But there's no proof of aliens yet.

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist having a Eureka moment, realising in a single dramatic instant that Earth is ...