More like Death Planet

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Known SpaceUniverse
universe142 books1964
About aliens, set in 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 Man-Kzin Wars, Ringworld, Fleet of Worlds
Old Man's WarSeries
series16 books2005
Space opera, set in space.
“Sign a document at 65, saying you intend to join up 10 years later.”
from the catalogue
Start with Old Man's War →
VattaUniverse
universe10 books2003
Space opera, set in space.
“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
HonorverseUniverse
universe83 books1993
Space opera, set in space.
“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, Expanded Honorverse, Star Kingdom (Honor Harrington), Honor Harrington Universe short fiction, Manticore Ascendant
Starship TroopersNovel
Robert A. Heinleinstandalone novel1959
About coming of age and aliens, set in space.
Ender's GameUniverse
universe39 books1977
Science fiction, set in far future.
“To beat your enemy you must first understand him so completely that you love him — and in the instant you love him, you destroy him.”
from the catalogue
Start with Ender's Game →
includes First Formic War, Ender Wiggin, Ender's Shadow, Second Formic War, Fleet School