In Other Worlds, Michael Lemonick introduces us to the pioneering researchers who are using brand-new technology to explore the universe, looking for elusive signs of life.

Other Worlds takes us inside the observatories, from the world's most powerful telescopes, situated at the top of a volcanic mountain in Hawaii, to the giant radio antennas in a bucolic West Virginia valley, used to listen for alien signals.

It is in these places that scientists like Paul Butler and Geoff Marcy analyze the data that led to their discovery of new planets trillions of miles away, and where astronomer Seth Shostak helps run Project Phoenix for the SETI (Search for Extra-Terrestrial Intelligence) Institute. Even NASA has now begun its Origins Program, hoping the search for extraterrestrial life will do for the agency what the mission to put a man on the moon did in the 1960s.