More like Breeding Ground

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Starship TroopersNovel
Robert A. Heinleinstandalone novel1959
Military science fiction, adventurous in tone, about coming of age, set in other star systems.
ThistledownSeries
series5 books1978
completed
Science fiction and hard science fiction, about space exploration, set in far future and space.
Start with The Wind from a Burning Woman →
XeeleeSeries
series89 books1987
Science fiction and hard science fiction, about aliens, set in far future and space.
“The Xeelee are described as symbiotic entities composed of spacetime defects, Bose–Einstein condensates, and baryonic matter.”
from the catalogue
Start with Raft →
The Gods ThemselvesNovel
Isaac Asimovstandalone novel1972
Set in parallel universe and other star systems.
A Meeting with MedusaSeries
series2 books1971
Reflective in tone, about immortality, set in outer planets & moons and other star systems.
“Arthur C. Clarke's A Meeting with Medusa follows an astronaut, badly injured in an earlier disaster, on a solo balloon expedition into Jupiter's atmosphere, where he encounters vast floating lifeforms unlike anything previously catalogued.”
from the catalogue
Start with A Meeting with Medusa →
Schild's LadderNovel
Greg Eganstandalone novel2002
About technological singularity and ecological collapse, set in deep space.