More like Dreadnought

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Known SpaceUniverse
universe142 books1964
About aliens, set in other star systems.
“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 Man-Kzin Wars, Ringworld, Fleet of Worlds
Old Man's WarSeries
series16 books2005
Set in other star systems.
“Sign a document at 65, saying you intend to join up 10 years later.”
from the catalogue
Start with Old Man's War →
HonorverseUniverse
universe83 books1993
Set in other star systems.
“At the center stands one officer, Honor Harrington — captain, then something far larger — and the six-limbed empathic treecat who rides her shoulder.”
from the catalogue
Start with On Basilisk Station →
includes Honor Harrington, Saganami Island, Worlds of Honor anthologies, Wages of Sin, Manticore Ascendant, Expanded Honorverse, Honor Harrington Universe short fiction, Star Kingdom (Honor Harrington)
CoDominiumUniverse
universe98 books1971
Set in 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
Starship TroopersNovel
Robert A. Heinleinstandalone novel1959
About coming of age and aliens, set in other star systems.
VattaUniverse
universe10 books2003
Set in other star systems.
“Get kicked out of the Academy and the family still hands you a ship.”
from the catalogue
Start with Trading in Danger →
includes Vatta's War, Vatta's Peace