Robert Gendler is a physician who spends his free time taking pictures of the night sky. His astrophotography appears in Mike Lynch's "StarWatch" book series and the bestselling "The Universe: 365 Days." His images also appear regularly in "Sky & Telescope "magazine and on the popular web site "Astronomy Picture of the Day." He lives in Avon, Connecticut, with his wife and two children. Timothy Ferris is the author of such bestsellers as "The Whole Shebang "and "Coming of Age in the Milky Way." He has been nominated for the Pulitzer Prize and the National Book Award.