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

Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.

A mind wrapped in skin and bone can feel like the obvious model for consciousness. But that assumption may say more about ...

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

Humans and great apes have been giggling in similar ways since branching off the evolutionary tree, a new study suggests. How ...

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

We've hooked up some machinery,” said Tommy, “that amounts to a mechanical translator… When you're ready to talk to the skipper of the other ship, sir, I ...

A study suggests that stellar plasma may distort alien signals, complicating SETI's search for extraterrestrial life by ...

What if consciousness isn’t limited to brains like ours? Philosophers Eric Schwitzgebel and Jeremy Pober argue that ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

Researchers have looked at how particular microbes from Earth would fare in conditions like those of Mars, the moon, and the ...

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.