More like Corvus

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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
ThistledownSeries
series5 books1978
completed
Hard science fiction.
Start with The Wind from a Burning Woman →
CoDominiumUniverse
universe98 books1971
Science fiction and military science fiction, set in far future and 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, War World, Laurie Jo Hansen
UpliftUniverse
universe13 books1980
Space opera, adventurous in tone, about uplift and aliens.
“No species, the Galactics insist, ever climbs to sapience alone.”
from the catalogue
Start with Sundiver →
includes Uplift, Uplift Storm
Central ControlSeries
series2 books1953
completed
Adventurous in tone.
“Andre Norton's Central Control novels are a loose future history that sketches the rise of a galactic empire through events echoing Norton's own reading of Terran history rather than following one continuing cast.”
from the catalogue
Start with Star Rangers →
HeecheeSeries
series19 books1972
completed
Space opera, about aliens.
“The Heechee are an advanced alien race that visited the Solar System hundreds of millennia ago and then mysteriously disappeared.”
from the catalogue
Start with Gateway →