(Reuters) – Astronomers have discovered a new type of rocky planet beyond the solar system that weighs more than 17 times as much as Earth while being just over twice the size, scientists said on Monday. The so-called “mega-Earth” circles a very old star called Kepler-10, which is located about 560 light-years away from Earth in the constellation Draco. The discovery, announced at the American Astronomical Society meeting in Boston, was a surprise since planets […]