The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

A polarizing Harvard astronomer has been appointed to lead a White House panel studying UFOs. Avi Loeb is leading a new ...

No bombshells so far in the latest Pentagon batch of declassified Unidentified Anomalous Phenomena files. But they show the CIA hid its involvement.

"This is a detective story that can be resolved with better data," Harvard astrophysicist Avi Loeb told Newsweek.

For decades, the question of whether life exists beyond Earth has been the domain of science fiction writers and late-night ...

如果你现在放眼欧洲西部，就会发现很难找到能够避开高温的地区。 European farmers are still counting the cost of last year's drought, which saw plummetin ...