Arthur C. Clarke is considered the greatest science fiction writer of all time and is an international treasure in many other ways, including the fact that an article by him in 1945 led to the invention of satellite technology. Books by Clarke—both fiction and nonfiction—have sold more than one hundred million copies in print worldwide. He lives in Sri Lanka.

Stephen Baxter is a trained engineer with degrees from Cambridge and Southampton Universities. Baxter is the acclaimed author of the Manifold novels and Evolution. He is the winner of the British Science Fiction Award, the Locus Award, the John W. Campbell Award, and the Philip K. Dick Award, as well as being a nominee for an Arthur C. Clarke Award.