An international team of astronomers has discovered a bigger version of Earth locked in an orbital tug-of-war with a much larger, Neptune-sized planet as they orbit very close to each other around the same star about 1,200 light years from Earth. An artist's conception shows Kepler-36c as it might look from the surface of Kepler-36b (David Aguilar / Harvard-Smithsonian Center for Astrophysics) Few nighttime sights offer more drama than the full...
