By Lewis, C. S.
By Chiang, Ted
By Asimov, Isaac
By McDevitt, Jack
By McAuley, Paul J.
By Glenn, Joshua
By Dick, Philip K.
By Wells, H. G., Sawyer, Andy, Parrinder, Patrick
By Bear, Greg
By Gibson, WILLIAM
By J. G. Ballard
By Stephen Donaldson
By Robert Silverberg
By Arthur C. Clarke
By Harry Harrison
By Robert A. Heinlein
By Larry Niven
By Philip K. Dick
By Stephen Baxter
By Robert Silverberg, Martin H. Greenberg
By Ben Bova
By Ray Bradbury
By David Brin