Series of sci-fi novels: sisters turned into cow like aliens, mother ship full of humans
91236
Book about a group of escaped prisoners with tattooed faces
100224
Sci-fi book series set in postapocalyptic frozen world with train colors representing class rank
31752
CG series about a beast planet
102575
Sci-fi book with HUGE trees and catlike people
154388
Sci-Fi book with 4 prison planets
126610
Series of novels involving a galactic empire in slow decline
116839
Novel about alien species made of gas rings?
148604
Name the book where the setting is a giant ship with a planet inside
50462
Novel(s) based on humanity fleeing from Earth and regressing to a pre-industrial state on a Colony so as to escape detection
18991
Book about attack by aliens that decimate entire human fleet and take a single prisoner
69401
Short SciFi story where humans join and evolve into a kind of multi-creature
17094
Identity novel, short story or book series... slower than light space battles, time dilation and boardings, several planets
2221
series of young adult science fiction books from early 1980s about last of a race of martial experts that sees the destruction of his home planet
65801
Looking for name of a book-series - Spaceship crashed, Civilization based on Magic rebuilt
139069
Short story where humans receive false distress signal, lured into galactic federation
156511
Science fiction about found children who are adopted into families and age quickly
11855
Hunger games style alien book