More like Manifold

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ThistledownSeries
series5 books1978
completed
Science fiction and hard science fiction, about space exploration, set in space and far future.
Start with The Wind from a Burning Woman →
Blindsight / FirefallSeries
series3 books2006
Tense in tone, about artificial intelligence.
Start with Blindsight →
XeeleeSeries
series89 books1987
Science fiction and hard science fiction, about aliens, set in space and far future.
“The Xeelee are described as symbiotic entities composed of spacetime defects, Bose–Einstein condensates, and baryonic matter.”
from the catalogue
Start with Raft →
A Meeting with MedusaSeries
series2 books1971
About immortality, set in outer planets & moons.
“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 →
Stranger in a Strange LandNovel
Robert A. Heinleinstandalone novel1961
About faith and religion and psychic powers, set in north america.
RamaUniverse
universe7 books1973
Set in spaceship.
“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)