While trying to determine if it could use the entire Earth's atmosphere as a massive sensor, DARPA made a highly unusual ...

The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth ... stellar radiation blows their atmosphere away, removing much of ...

NASA has discovered a new world, named Gliese 12 b. It is roughly the size of Earth, lies in the habitable zone, and orbits every 12.8 days.