Astronomers find seven Earth-size planets where life may be possible

By Irene KlotzCAPE CANAVERAL, Fla. (Reuters) - Astronomers have found a nearby solar system with seven Earth-sized planets, three of which circle their parent star at the right distance for liquid surface water, raising the prospect of life, research published on Wednesday showed.It is located about 40 light years away from Earth."I think that we've made a crucial step towards finding if there is life out there," University of Cambridge astronomer Amaury Triaud told reporters on a conference cal