Terms of Enlistment (Frontlines Book 1)
Marko Kloos
Frontlines (1)
Cibola Burn (The Expanse Book 4)
James S.A. Corey
The Expanse (4)
The Butcher of Anderson Station (An Expanse Novella)
James S. A. Corey
The Expanse (1.50)
The Robots of Dawn
Isaac Asimov
Foundation (4)
Contact
Carl Sagan