Most of the universe is incredibly hostile, it's a vacuum, it's freezing-cold space or burning hot near a star. The first habitable planet found outside our solar system is in a habitable-zone orbit; it's a place of refuge from the unbelievable harshness of the universe. Steve Vogt, a UC Santa Cruz professor of astronomy and astrophysics, takes you into the Lick Observatory, where he has devoted years of research to find earth-like planets (#24476)