Dr Jason Steffen

Are we alone in the universe? It's a fundamental question for Earth-dwelling humankind. Are there other worlds like ours, out there somewhere? In Hidden in the Heavens, Jason Steffen, a former scientist on NASA's Kepler mission, describes how that mission searched for planets orbiting Sun-like stars, especially Earth-like planets circulating in Earth-like orbits. What the Kepler space telescope found, Steffen...