3rd planet found in two-star system, is 7 times the size of Earth

A team led by San Diego State University astronomers has discovered a third planet in a two-star system named Kepler-47, which is seven times the size of the Earth and the largest in its system. The team used NASA's Kepler space telescope to find the Neptune-to-Saturn-size planet orbiting between two previously known planets. Kepler-47 is 3,340 light-years away from Earth.