Finding New Worlds

Is there intelligent life on other planets? UC Berkeley Professor of Astronomy Geoffrey Marcy, a pioneer in the discovery and characterization of planets around other stars, discusses new telescopic and biological observations that provide clues. A co-investigator of Kepler, the NASA space-born telescope dedicated to identifying Earth-like planets, his research has included detection of the first multiple-planet system, the first Saturn-mass planet and the first Neptune-mass planet.