SF Supernova

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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
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The Stowaway
Cover of The Stowaway by Alvin Heiner
The Stowaway
Alvin Heiner · 1958
10 min read
Hard SFSpace Opera
The Stuff
Cover of The Stuff by Henry Slesar
The Stuff
Henry Slesar · 1961
9 min read
Hard SFSocial SF
The Stutterer
Cover of The Stutterer by Reuben Merliss
The Stutterer
Reuben Merliss · 1955
45 min read
First ContactHard SF
The Sun-Death
Cover of The Sun-Death by Stanley Whiteside
The Sun-Death
Stanley Whiteside · 1953
58 min read
Hard SFSpace Opera
The Sword and the Atopen
Cover of The Sword and the Atopen by Taylor H. Greenfield
The Sword and the Atopen
Taylor H. Greenfield · 1931
13 min read
Hard SFMilitary SF
The Tantalus Death
Cover of The Tantalus Death by Ross Rocklynne
The Tantalus Death
Ross Rocklynne · 1940
30 min read
Hard SFPost-Apocalyptic
The Thirst Quenchers
Cover of The Thirst Quenchers by Rick Raphael
The Thirst Quenchers
Rick Raphael · 1963
1 hr 11 min read
Hard SFSocial SF
The Three Eyes
Cover of The Three Eyes by Maurice Leblanc
The Three Eyes
Maurice Leblanc · 1919
4 hr 22 min read
First ContactHard SF
The Trouble with Telstar
Cover of The Trouble with Telstar by John Berryman
The Trouble with Telstar
John Berryman · 1963
58 min read
Hard SFSocial SF
The Ultimate Image
Cover of The Ultimate Image by P. Schuyler Miller
The Ultimate Image
P. Schuyler Miller · 1940
25 min read
Hard SFMilitary SF
The Undersea Tube
Cover of The Undersea Tube by L. Taylor Hansen
The Undersea Tube
L. Taylor Hansen · 1929
18 min read
AdventureHard SF
The Universe, or Nothing
Cover of The Universe, or Nothing by Meyer Moldeven
The Universe, or Nothing
Meyer Moldeven · 1984
~7 hr read
Hard SFSpace Opera
The Unthinking Destroyer
Cover of The Unthinking Destroyer by Rog Phillips
The Unthinking Destroyer
Rog Phillips · 1948
15 min read
First ContactHard SF
The Unwilling Professor
Cover of The Unwilling Professor by Arthur Porges
The Unwilling Professor
Arthur Porges · 1954
13 min read
First ContactHard SF
The Variable Man
Cover of The Variable Man by Philip K. Dick
The Variable Man
Philip K. Dick · 1953
1 hr 56 min read
Hard SFTime Travel
The Vortex Blaster
Cover of The Vortex Blaster by E. E. Smith
The Vortex Blaster
E. E. Smith · 1941
32 min read
Hard SFSpace Opera
The Water Eater
Cover of The Water Eater by Winston K. Marks
The Water Eater
Winston K. Marks · 1953
18 min read
Hard SFSocial SF
The Weird Adventures of Professor Delapine of the Sorbonne
Cover of The Weird Adventures of Professor Delapine of the Sorbonne by G. Lindsay Johnson
The Weird Adventures of Professor Delapine of the Sorbonne
G. Lindsay Johnson · 1916
~8 hr read
Hard SFHorror
The Whispering Spheres
Cover of The Whispering Spheres by R. R. Winterbotham
The Whispering Spheres
R. R. Winterbotham · 1941
50 min read
Hard SFSpace Opera
The World Masters
Cover of The World Masters by George Chetwynd Griffith
The World Masters
George Chetwynd Griffith · 1903
~5 hr read
DystopiaHard SF
The World Set Free
Cover of The World Set Free by H. G. Wells
The World Set Free
H. G. Wells · 1914
3 hr 47 min read
DystopiaHard SF
The Worlds of If
Cover of The Worlds of If by Stanley G. Weinbaum
The Worlds of If
Stanley G. Weinbaum · 1949
25 min read
Alternate HistoryHard SF
The Year When Stardust Fell
Cover of The Year When Stardust Fell by Raymond F. Jones
The Year When Stardust Fell
Raymond F. Jones · 1958
4 hr 13 min read
Hard SFPost-Apocalyptic
The answer
Cover of The answer by George O. Smith
The answer
George O. Smith · 1947
14 min read
Hard SFSocial SF

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