"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems." ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Is alien life really out there? For decades, humanity has looked at the night sky and asked the same question. Now, according ...

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

Case in point: Scientists from Tokyo University and Hokkaido University in Japan stumbled across some mysterious jet-black ...

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?