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 Cosmic Express
Cover of The Cosmic Express by Jack Williamson
The Cosmic Express
Jack Williamson · 1931
22 min read
Hard SFSocial SF
The Crack of Doom
Cover of The Crack of Doom by Robert Cromie
The Crack of Doom
Robert Cromie · 1895
2 hr 55 min read
DystopiaHard SF
The Day Time Stopped Moving
Cover of The Day Time Stopped Moving by Ed Earl Repp
The Day Time Stopped Moving
Ed Earl Repp · 1940
28 min read
Hard SFTime Travel
The Deep One
Cover of The Deep One by Neil P. Ruzic
The Deep One
Neil P. Ruzic · 1957
20 min read
First ContactHard SF
The Diamond Lens
Cover of The Diamond Lens by Fitz James O'Brien
The Diamond Lens
Fitz James O'Brien · 1858
32 min read
Hard SFHorror
The Diamond Lens
Cover of The Diamond Lens by Fitz James O'Brien
The Diamond Lens
Fitz James O'Brien · 1858
32 min read
Hard SFHorror
The Doom of London
Cover of The Doom of London by Fred M. White
The Doom of London
Fred M. White · 1903
2 hr 43 min read
Hard SFPost-Apocalyptic
The Doors of Death
Cover of The Doors of Death by Arthur B. Waltermire
The Doors of Death
Arthur B. Waltermire · 1936
20 min read
Hard SFHorror
The Double Spy
Cover of The Double Spy by Dan T. Moore
The Double Spy
Dan T. Moore · 1954
29 min read
Hard SFSocial SF
The Drug
Cover of The Drug by C. C. MacApp
The Drug
C. C. MacApp · 1961
22 min read
Hard SFSocial SF
The Dueling Machine
Cover of The Dueling Machine by Ben Bova
The Dueling Machine
Ben Bova & Myron R. Lewis · 1963
1 hr 42 min read
Hard SFSocial SF
The Einstein See-Saw
Cover of The Einstein See-Saw by Miles J. Breuer
The Einstein See-Saw
Miles J. Breuer · 1932
38 min read
Alternate HistoryHard SF
The English at the North Pole
Cover of The English at the North Pole by Jules Verne
The English at the North Pole
Jules Verne · 1866
4 hr 17 min read
AdventureHard SF
The Expendables
Cover of The Expendables by Jim Harmon
The Expendables
Jim Harmon · 1962
25 min read
Hard SFSocial SF
The Fire People
Cover of The Fire People by Ray Cummings
The Fire People
Ray Cummings · 1922
4 hr 21 min read
First ContactHard SF
The First
Cover of The First by Edward W. Ludwig
The First
Edward W. Ludwig · 1955
21 min read
Hard SFSpace Opera
The First Man on the Moon
Cover of The First Man on the Moon by Alfred Coppel
The First Man on the Moon
Alfred Coppel · 1950
7 min read
Hard SFSpace Opera
The Floating Island of Madness
Cover of The Floating Island of Madness by Jason Kirby
The Floating Island of Madness
Jason Kirby · 1933
41 min read
AdventureHard SF
The Food of the Gods and How It Came to Earth
Cover of The Food of the Gods and How It Came to Earth by H. G. Wells
The Food of the Gods and How It Came to Earth
H. G. Wells · 1904
~5 hr read
Hard SFSocial SF
The Fur Country: Or, Seventy Degrees North Latitude
Cover of The Fur Country: Or, Seventy Degrees North Latitude by Jules Verne
The Fur Country: Or, Seventy Degrees North Latitude
Jules Verne · 1873
~8 hr read
AdventureHard SF
The Galleon's Gold; or, Frank Reade, Jr.'s Deep Sea Search.
Cover of The Galleon's Gold; or, Frank Reade, Jr.'s Deep Sea Search. by Luis Senarens
The Galleon's Gold; or, Frank Reade, Jr.'s Deep Sea Search.
Luis Senarens · 1895
2 hr 44 min read
AdventureHard SF
The Genius
Cover of The Genius by Con Pederson
The Genius
Con Pederson · 1954
31 min read
Hard SFSocial SF
The Gently Orbiting Blonde
Cover of The Gently Orbiting Blonde by John Victor Peterson
The Gently Orbiting Blonde
John Victor Peterson · 1957
17 min read
Hard SFSocial SF
The Girl from Infinite Smallness
Cover of The Girl from Infinite Smallness by Ray Cummings
The Girl from Infinite Smallness
Ray Cummings · 1940
42 min read
AdventureHard SF

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