Scientists say the findings of the new study may make future searches for extraterrestrial intelligence faster and more ...

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 ...

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

Barnard’s Star hosts four hostile small planets whose unusual chemistry and orbital rhythm reveal how compact planetary ...

NASA plans to launch the Habitable Worlds Observatory in the 2040s, a mission whose goal is “to image Earth-like planets around other sun-like stars,” according to NASA’s website.

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

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

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 ...

Planets orbiting stars beyond the solar system come in all shapes and sizes but mostly fit into a few categories: large and hot gas giants, super-Earths that are slightly larger than our planet, ...

The nature of space, time and the evolution of life on Earth mean it’s unlikely extraterrestrial life has visited our home planet.