Astronomers swept millions of candidates and found no alien signals from K2-18b, setting the first power limit on any ...

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist ...

For decades, the search for extraterrestrial intelligence has been defined more by silence than discovery, but that balance may be starting to shift. As new telescopes, algorithms, and theoretical ...

Scientists have searched one of the only known visitors to us from another solar system for signs of alien technology – and ...

There were no 'technosignatures' from comet 3I/ATLAS, the third known object from a faraway star The group leading the charge ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.