NASA's Kepler spacecraft, patiently measuring the light of distant suns to find the tell-tale dimming caused by the passage of unseen planets, has discovered a solar system 210 light years from Earth ...

If you think it’s hard to be in a stable orbit around one star, think of how hard it must be to maintain an orbit around two. Binary star systems are the most common type of star system we have found.

NASA’s Kepler mission scientists have discovered a new planetary system that is home to the smallest planet yet found around a star similar to our Sun. The planets are located in a system called ...