Astronomers from the California Institute of Technology (Caltech) say they have strong evidence that there is a ninth planet in…
NASA's Dawn mission has gone into orbit around Ceres, the largest object in the Solar System between Mars and Jupiter.…
NASA’s Kepler telescope has identified 715 new planets beyond our Solar System. In the nearly two decades since the first…
Astronomers are waiting to see if Comet ISON survives its encounter with the Sun. Comet ISON will reach its closest…
Voyager-1 has become the first manmade object to leave the Solar System. Scientists say the probe's instruments indicate it has…