Since the first Search for Extraterrestrial Intelligence (SETI) experiment in 1960, scientists have been scanning the Milky ...

There are tens of billions of Sun-like stars in the Milky Way, an immense tally that encourages the possibility that extraterrestrial life peppers the universe. Finding evidence for aliens — even ...

Shiny shards, polished spheres, and desert monoliths are quickly framed as alien artifacts, long before anyone checks what they are actually made of. When laboratories finally weigh in, the verdict is ...

The newest visitor from deep space, interstellar comet 3I/ATLAS, has arrived with a literal pulse that is stirring up talk of alien engineering as much as it is exciting astronomers. As its brightness ...