More like Cosmic Catalyst

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Known SpaceUniverse
universe142 books1964
About aliens.
“Give a clever species a few centuries and a working fusion drive, and it will fill the sky with problems.”
from the catalogue
Start with Ringworld →
includes Ringworld, Fleet of Worlds, Man-Kzin Wars
VorkosiganUniverse
universe27 books1986
Science fiction and space opera, set in far future and other star systems.
“Beyond his backwater lies the wormhole nexus: a scatter of human worlds strung along unstable jump-routes, where a blood-and-honor warrior aristocracy, a coolly egalitarian utopia, and a hundred lesser polities trade, spy, and go to war.”
from the catalogue
Start with Shards of Honor →
includes Cordelia Vorkosigan, Miles Vorkosigan, Quaddies
CoDominiumUniverse
universe98 books1971
Military science fiction.
“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
Starman JonesNovel
Robert A. Heinleinstandalone novel1953
About space exploration and coming of age, set in spaceship.
“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
An Accidental GoddessNovel
Linnea Sinclairstandalone novel2002
Time travel and romance, set in space station.
“The last thing she remembers is her ship being attacked.”
from the catalogue
Citizen of the GalaxyNovel
Robert A. Heinleinstandalone novel1957
About coming of age and identity.
“On a planet far distant from Earth, a lame beggar buys a young boy slave who has forgotten his origins.”
from the catalogue