More like Mating Urge

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Known SpaceUniverse
universe142 books1964
Science fiction, about aliens, set in far future and space.
“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, Man-Kzin Wars, Fleet of Worlds
Starman JonesNovel
Robert A. Heinleinstandalone novel1953
Space opera, about space exploration and coming of age.
“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.
“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
Starship TroopersNovel
Robert A. Heinleinstandalone novel1959
Military science fiction, about war and coming of age.
The TalentsUniverse
universe18 books1959
About psychic powers.
“Somewhere a Prime holds a Tower, gathers the gestalt of a generator's power, and flings a starship — or a single frightened child — across the light-years between worlds.”
from the catalogue
Start with The Rowan →
includes Tower and the Hive, Talents (Anne McCaffrey)
HeecheeSeries
series19 books1972
completed
Space opera, about space exploration.
“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 →