Born in New York in 1935, Robert Silverberg published his first novel, Revolt on Alpha C, at only 19 years old. The Hugo prize for the most promising author he obtained in 1955 announced a great career. It was not until 1968 that the author refined his style and found a real outlet in the field of science fiction with The Man in the Maze and Nightwings. In the 1970s, he enjoyed success with Dying Inside, The Book of Skulls, and in 1980 Lord Valentine's Castle.

Multi-awarded and considered a staple of SF literature, Robert Silverberg now lives in San Francisco. He has entrusted Humanoids with the honor of adapting his novel Downward to the Earth into sequential format.