Hard SF
1309 booksEvery hard sf book in our directory, with content ratings, trigger warnings, and age recommendations.
Manna
Manna
RReckoning Infinity
Reckoning Infinity
PG-13Farside Cannon
Farside Cannon
PG-13The Voyages and Adventures of Captain Hatteras
The Voyages and Adventures of Captain Hatteras
PGThe Adventures of Three Englishmen and Three Russians in Southern Africa
The Adventures of Three Englishmen and Three Russians in Southern Africa
PGThe Practice Effect
The Practice Effect
RBeyond the Veil of Stars
Beyond the Veil of Stars
PG-13The Killing Star
The Killing Star
PG-13Supernova
Supernova
PG-13Isaac Asimov's Caliban
Isaac Asimov's Caliban
PG-13Isaac Asimov's Utopia
Isaac Asimov's Utopia
PG-13The Modular Man
The Modular Man
RHunting on Kunderer
Hunting on Kunderer
RFirst Citizen
First Citizen
PG-13Crygender
Crygender
RHeaven's Reach
Heaven's Reach
RBeowulf's Children
Beowulf's Children
PG-13The Ring of Charon
The Ring of Charon
PG-13Fantastic Voyage
Fantastic Voyage
PGFantastic Voyage II: Destination Brain
Fantastic Voyage II: Destination Brain
PGDark Sky Legion
Dark Sky Legion
RWhen Heaven Fell
When Heaven Fell
PGB.E.A.S.T.
B.E.A.S.T.
PG-13Calculated Risk
Calculated Risk
PG-13Crisis 2000
Crisis 2000
PG-13The Darkest of Nights
The Darkest of Nights
PGHe Owned the World
He Owned the World
PG-13High Vacuum
High Vacuum
PG-13The Isotope Man
The Isotope Man
PG-13The Winds of Altair
The Winds of Altair
PG-13