When astronomers announced Kepler-452b, they were not just adding another distant world to a growing catalog. They were ...

Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

A layer of molten rock deep inside some rocky planets may be doing more than shaping their interiors. New research points to ...

Mars just scored another point in favor of alien life. Scientists discovered signs of an ocean's worth of liquid water miles below Mars' surface. The findings, based on Marsquake measurements by ...

Astonishingly, we can identify molecules present in the atmospheres of exoplanets.

While such organisms may or may not exist in the universe, the research has important implications for future human endeavors in space. When you purchase through links on our site, we may earn an ...

Astronomers discovered the TRAPPIST-1 system, a family of tightly packed planets swarming a red dwarf star, about eight years ago. Credit: Mark Garlick / Science Photo Library / Getty Images ...