Robert Silverberg's career stretches back to the pulps and his output is amazing by any standard. He is a multiple winner of both Hugo and Nebula Awards, a member of the Science Fiction and Fantasy Hall of Fame, and was named a Grand Master of Science Fiction in 2004 by the Science Fiction and Fantasy Writers of America. He has attended every Hugo Awards ceremony since the inaugural event in 1953. His major works include The Book of Skulls, The Alien Years, The World Inside, Nightfall and The Positronic Man with Isaac Asimov, Nightwings, and the seven Majipoor Cycle books, as well as numerous anthologies.