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

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

We might not be alone in the Universe. While combing through data from 1949, scientists spotted something impossible: strange ...

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.