SF Supernova

Discover / Theme

Hard SF

Rigorous scientific speculation.

521 titles

Often paired with
Social SF 129Space Opera 121Adventure 68First Contact 35Horror 32Post-Apocalyptic 22
Peaks in
1950s1940s1960s1930s1890s
Explored most by
Jules VerneGeorge O. SmithH. G. WellsLuis SenarensMurray LeinsterE. E. SmithMary Wollstonecraft ShelleyRay Cummings
See it mapped
On the Star Map →
Point of Departure
Cover of Point of Departure by Vaughan Shelton
Point of Departure
Vaughan Shelton · 1956
32 min read
Hard SFSpace Opera
Poisoned Air
Cover of Poisoned Air by S. P. Meek
Poisoned Air
S. P. Meek · 1932
44 min read
AdventureHard SF
Prelude to Space
Cover of Prelude to Space by Robert W. Haseltine
Prelude to Space
Robert W. Haseltine · 1961
6 min read
First ContactHard SF
Prime Difference
Cover of Prime Difference by Alan Edward Nourse
Prime Difference
Alan Edward Nourse · 1957
23 min read
Hard SFSocial SF
Problem in solid
Cover of Problem in solid by George O. Smith
Problem in solid
George O. Smith · 1947
40 min read
Hard SFSpace Opera
Proxy Planeteers
Cover of Proxy Planeteers by Edmond Hamilton
Proxy Planeteers
Edmond Hamilton · 1947
26 min read
Hard SFSpace Opera
Pushbutton War
Cover of Pushbutton War by Joseph Paul Martino
Pushbutton War
Joseph Paul Martino · 1960
26 min read
Hard SFMilitary SF
Pygmalion's Spectacles
Cover of Pygmalion's Spectacles by Stanley G. Weinbaum
Pygmalion's Spectacles
Stanley G. Weinbaum · 1949
31 min read
Hard SFSocial SF
QRM-Interplanetary
Cover of QRM-Interplanetary by George O. Smith
QRM-Interplanetary
George O. Smith · 1942
59 min read
Hard SFSpace Opera
Radio V-rays
Cover of Radio V-rays by Jan Dirk
Radio V-rays
Jan Dirk · 1925
19 min read
AdventureHard SF
Radio mates
Cover of Radio mates by Benjamin Witwer
Radio mates
Benjamin Witwer · 1927
17 min read
Hard SFSocial SF
Raiders Invisible
Cover of Raiders Invisible by Desmond Winter Hall
Raiders Invisible
Desmond Winter Hall · 1931
52 min read
Hard SFMilitary SF
Raiders of the universes
Cover of Raiders of the universes by Donald Wandrei
Raiders of the universes
Donald Wandrei · 1932
32 min read
Hard SFSpace Opera
Rainbolt, the Ranger; or, The Aerial Demon of the Mountain
Cover of Rainbolt, the Ranger; or, The Aerial Demon of the Mountain by Oll Coomes
Rainbolt, the Ranger; or, The Aerial Demon of the Mountain
Oll Coomes · 1879
2 hr 38 min read
AdventureHard SF
Ralph 124C 41+: A Romance of the Year 2660
Cover of Ralph 124C 41+: A Romance of the Year 2660 by Hugo Gernsback
Ralph 124C 41+: A Romance of the Year 2660
Hugo Gernsback · 1911
3 hr 27 min read
Hard SFSocial SF
Reaching for the moon
Cover of Reaching for the moon by Evan Hunter
Reaching for the moon
Evan Hunter · 1951
7 min read
Hard SFSocial SF
Reality Unlimited
Cover of Reality Unlimited by Robert Silverberg
Reality Unlimited
Robert Silverberg · 1957
15 min read
Hard SFSocial SF
Rebuttal
Cover of Rebuttal by Betsy Curtis
Rebuttal
Betsy Curtis · 1956
14 min read
Hard SFSocial SF
Recalled to life
Cover of Recalled to life by Robert Silverberg
Recalled to life
Robert Silverberg · 1958
3 hr 27 min read
Hard SFSocial SF
Recoil
Cover of Recoil by George O. Smith
Recoil
George O. Smith · 1943
52 min read
Hard SFSpace Opera
Redevelopment
Cover of Redevelopment by George O. Smith
Redevelopment
George O. Smith · 1944
1 hr 3 min read
Hard SFSocial SF
Reluctant Genius
Cover of Reluctant Genius by Henry Slesar
Reluctant Genius
Henry Slesar · 1957
6 min read
Hard SFSocial SF
Remember the 4th!
Cover of Remember the 4th! by Noel M. Loomis
Remember the 4th!
Noel M. Loomis · 1951
22 min read
Hard SFPsychic Powers
Rescue Squad
Cover of Rescue Squad by Thomas J. O'Hara
Rescue Squad
Thomas J. O'Hara · 1956
21 min read
Hard SFSpace Opera

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