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Related subjects
Science fiction (2,384)
Life on other planets > Fiction (170)
Space colonies > Fiction (100)
Mars (Planet) > Fiction (99)
Science fiction, American (90)
fiction in English (78)
Space warfare > Fiction (48)
Ringworld (Imaginary place) > Fiction (37)
Imaginary wars and battles > Fiction (32)
Twenty-first century > Fiction (24)
Human-alien encounters > Fiction (24)
Artificial intelligence > Fiction (22)
Related tagmashes
hard sf, -fiction (100)
hard sf, science fiction (100)
hard sf, sf (100)
artificial intelligence, hard sf (68)
sf, space opera (60)
future, novel, science fiction (53)
science fiction, sf (50)
far future, science fiction (49)
science fiction, --robots (46)
science fiction, -cyberpunk (45)
artificial intelligence, sf (43)
sci-fi, sci-fi, science fiction (43)
sf, unread (43)
ai, science fiction (41)
Tag info: hard sf
Includes: hard sf, hard sci fi, hard sci-fi, hard science fiction, hard scifi, hard-sf, hardscifi, hardsf (what?)
Tag and its aliases used 1,718 times by 275 users.
Most often tagged hard sf
- Revelation Space by Alastair Reynolds (30)
- Green mars by Kim Stanley Robinson (32)
- Chasm City by Alastair Reynolds (24)
- Red Mars by Kim Stanley Robinson (32)
- Absolution Gap by Alastair Reynolds (20)
- Blue Mars by Kim Stanley Robinson (26)
- Redemption Ark by Alastair Reynolds (18)
- Manifold : origin by Stephen Baxter (12)
- Blindsight by Peter Watts (11)
- Raft by Stephen Baxter (9)
- Schild's ladder by Greg Egan (11)
- Pushing Ice by Alastair Reynolds (13)
- Mission of gravity by Hal Clement (12)
- Eon by Greg Bear (18)
- Quarantine by Greg Egan (11)
- Diaspora : a novel by Greg Egan (12)
- Lady of mazes by Karl Schroeder (7)
- Space by Stephen Baxter (11)
- Anvil of stars by Greg Bear (12)
- The Ringworld engineers by Larry Niven (17)
Using the tag hard sf
slothman (138), cogitno (66), WylieMaercklein (65), cricketk (42), SoKalKyle (36), dkennedy (35), dwtno (35), iftyzaidi (32), razorsmile (30), marcoha (26), fascination (25), jzduck (25), Archren (24), the_unnamable (23), ilande (22), eggwhite (21), cshalizi (20), aeble (20), SFotto (20), jimroberts (20), wyrdchao (20), ejp1082 (20), lfreijo (19), cmoore (19), slybrarian (19)Recently tagged hard sf 
- 2001: A Space Odyssey by Arthur C. Clarke (added by danielwood83)
- Farside Cannon by Roger MacBride Allen (added by DisassemblyOfReason)
- Deepsix by Jack Mcdevitt (added by ilande)
- Omega by Jack McDevitt (added by ilande)
- Long Arm of Gil Hamilton by Larry Niven (added by sullivan.t)
- House of Suns (Gollancz) by Alastair Reynolds (added by dkennedy)
- Indistinguishable From Magic by Robert L. Forward (added by DSchmitt)
- Timemaster by Robert L. Forward (added by DSchmitt)
- Chasm City by Alastair Reynolds (added by lmc_1136)
- Redemption Ark by Alastair Reynolds (added by lmc_1136)
- Absolution Gap by Alastair Reynolds (added by lmc_1136)
- Pushing Ice by Alastair Reynolds (added by lmc_1136)
- Century Rain by Alastair Reynolds (added by lmc_1136)