When it was first discovered in 2007, Gliese 581d was thought to be just outside its star's habitable zone, but later, scientists discovered that Gliese 581d is just close in enough to potentially ...

Add Yahoo as a preferred source to see more of our stories on Google. Some exoplanets, like the one shown in this illustration, may have atmospheres that could make them potentially suitable for life.

Finding life elsewhere in the cosmos is no easy task. We’ve been searching for decades and, so far, we haven’t heard from anyone and we haven’t found anywhere that looks quite like home. While ...

The definition of a habitable zone was necessarily simple in the beginning. Any planet at the right distance from its star to allow liquid surface water was considered to be in the habitable zone. But ...

Morgan Underwood receives funding from NASA-funded CLEVER Planets (Cycles of Life-Essential Volatile Elements in Rocky Planets) research project. When astronomers search for planets that could host ...