If you were hoping we’d find alien life hanging out on a cozy, pint-sized planet anytime soon, then you should know that ...

The size of a planet is a major factor that determines if life can gain a foothold on it, even if it's in the habitable zone ...

For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as ...

Geeks rejoice. A new study suggests that if extraterrestrial life exists, it’s likely being lived on this exoplanet.

NASA plans to launch the Habitable Worlds Observatory in the 2040s, a mission whose goal is “to image Earth-like planets ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration of a watery exoplanet with a red dwarf sun overhead. A new study suggests that the exoplanet GJ 3378b, which ...

A rocky world orbiting within its star’s habitable zone may be surrounded by a helium-rich atmosphere, providing the ...

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of expertS ...

The first sign of possible extraterrestrials detected in the cosmos didn't come in the form of little green aliens flying around in saucer-shaped spacecraft. In fact, the life that could be – emphasis ...

There is no chance in hell our species will be able to reach another Earth-like planet in the Universe in the foreseeable future, so the only way we can get a sense of the habitability of such places ...

Astronomers find planet that is shockingly like Earth in huge milestone for search for aliens - First ever discovery of its ...

LOS ANGELES (AP) — In “Disclosure Day,” out Friday, Steven Spielberg is once again inviting audiences to ponder the existence of extraterrestrial life — and the implications it would have for religion ...