By Philip K Dick 

By Sharon Lee 

By Sharon Lee 

By Paul McAuley 

By Peter F. Hamilton 

By James K. Decker 

By Rob Grant 

By Valerie Valdes 

By K. W. Jeter 

By J. R. R. Tolkien 

By Nino Cipri 

By Margaret Weis 

By Charles E. Gannon 

By Jack McDevitt 

By Peter Watts 

By Mike Moscoe 

By A. Bertram Chandler 

By Sir Arthur C. Clarke 

By Sheri S. Tepper 

By T. J. Berry 

By T J Klune 

By Dan Simmons 

By Robert J Sawyer 

By Edwin A. Abbott