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

It looks like a sapphire jewel in space, but HD 189733bis anything but serene. With winds reaching seven times the speed of ...

The supposed "strange signals" were not mysterious at all, but commonly observed transit signals, according to NASA.

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

Data from the Kepler project has confirmed a new world that fulfills the telescope's goal of locating Earth-sized planets ...