Ray Bradbury: The Martian Cronicles
Larry Nevin: Ringworld Series
Isaac Asimov: Foundation Series
Joe Haldeman: Forever War Series
Isaac Asimov: Robot series
Arthur C. Clark: Rama series
Frederik Pohl: Gateway series
C.S. Lewis: Silent Planet Trilogy
Larry Nevin: Ringworld Series
Isaac Asimov: Foundation Series
Joe Haldeman: Forever War Series
Isaac Asimov: Robot series
Arthur C. Clark: Rama series
Frederik Pohl: Gateway series
C.S. Lewis: Silent Planet Trilogy