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

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

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

Something is absorbing light on the surfaces of Pluto and Saturn’s moon Titan, and figuring out what it is could be crucial ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

Alien civilizations may have left traces. We just may not have been looking in the right place.

Ingo Swann was one of the most famous participants in the U.S. government's remote viewing experiments. Decades after his involvement was confirmed through declassified Stargate documents, Swann made ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week, with astrophysicists in the UK and Australia stressing that while ...

In June 1947, Kenneth Arnold saw something strange in the sky. What he saw sparked a national UFO craze-but it was far from ...

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