Foundation by Isaac AsimovI, Robot by Isaac AsimovThe Moon Is a Harsh Mistress by Robert A. HeinleinStranger in a Strange Land by Robert A. HeinleinThe Hitchhiker's Guide to the Galaxy by Douglas Adams
The Best Classical Science Fiction Works
112 books — 153 voters
Old Man's War by John ScalziStorm Front by Jim  ButcherLeviathan Wakes by James S.A. CoreyThe Lies of Locke Lamora by Scott LynchThe Warded Man by Peter V. Brett
New Speculative Fiction Stars
1,150 books — 2,724 voters

Starship Troopers by Robert A. HeinleinLeviathan Wakes by James S.A. CoreyOld Man's War by John ScalziThe Moon Is a Harsh Mistress by Robert A. Heinlein
Excellent Space Opera
1,032 books — 3,682 voters