More like A Dubious Hypothesis

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FoundationUniverse
universe123 books1940
Science fiction, about robots, set in far future.
“There is a science that reads the future of quadrillions the way an astronomer reads the orbits of stars.”
from the catalogue
Start with Foundation →
includes The Positronic Robot Stories, Foundation, Trantorian Empire, Second Foundation Trilogy, Foundation (Original Stories), The Collected Fiction of Isaac Asimov
NovaNovel
Samuel R. Delanystandalone novel1968
About quests and revenge, set in space and other star systems.
“The plot concerns the spaceship captain Lorq Von Ray's search for a nova, which will produce the essential power source Illyrion, and his vendetta with the Red family, who seek to kill him.”
from the catalogue
Starman JonesNovel
Robert A. Heinleinstandalone novel1953
About coming of age, set in space and other star systems.
“Starman Jones, a 1953 science fiction novel by Robert A. Heinlein, features a farm boy who wants to go to the stars.”
from the catalogue
CoDominiumUniverse
universe98 books1971
Military science fiction, set in other star systems.
“The body of work runs along a few hard threads rather than one line.”
from the catalogue
Start with The Mote in God's Eye →
includes Moties, Falkenberg's Legion, Laurie Jo Hansen, War World
RamaUniverse
universe7 books1973
About aliens, set in space.
“Something is falling through the solar system on a hyperbolic orbit, and it is not a comet.”
from the catalogue
Start with Rendezvous with Rama →
includes Rama (2)
The Hitchhiker's Guide to the GalaxyUniverse
universe18 books1979
Humor, funny in tone, set in space.
“The Earth is scheduled for demolition to make way for a hyperspace bypass, and honestly, nobody filed the paperwork properly.”
from the catalogue
Start with The Hitchhiker's Guide to the Galaxy →
includes Hitchhiker's Guide to the Galaxy, Dirk Gently