A newly released batch of once-classified UFO files has revived interest in one of the strangest claims buried in Cold War-era intelligence records: a CIA-linked reference to a destroyed "message from ...

SETI has new rules for verifying a possible alien signal. As artificial intelligence enters the search, another boundary deserves attention: finding unfamiliar information is not permission to turn it ...

The White House made a promise to release every file connected to UFOs and extraterrestrials, leading many to believe they ...

An alien radio signal from K2-155 d? Are there any alien civilizations out there? For several decades, scientists have been searching for evidence that they exist. That effort is collectively known as ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more natural source. In a series of papers, astronomers have compared the "Wow!