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 ...

The discovery provides strong evidence that worlds with conditions similar to our own, with the potential to support life, ...

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

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

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

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

If you were hoping we’d find alien life hanging out on a cozy, pint-sized planet anytime soon, then you should know that planetary scientists just dropped a major buzzkill on our hunt for ...

Sagan's team created the greatest puzzle of all time, which you can only solve if your species understands the basic nature ...

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, ...

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