Rocky planets that are about earth-size, or maybe two to three times larger, will offer the best ... [+] chances for simple microbial life, says geodynamicist.
Bruce Dorminey is a Senior Contributor at Forbes and NewsBreak. An award-winning science journalist, he primarily covers aerospace and astronomy, with a focus on space exploration, NASA, and climate change. He is the author of "Distant Wanderers: the Search for Planets Beyond the Solar System" and has previously served as the Hong Kong bureau chief for Aviation Week & Space Technology magazine.