An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a Sun-like star, ...

Super-Earths are larger than Earth but smaller than ... This material may not be published, broadcast, rewritten, or redistributed. For the latest news, weather, sports, and streaming video ...

A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in our galaxy.