Cant remember the author or title sci fi space portal planet colonization
862
Book ID: Astronauts and Lab Students can create portals through space
26391
SF Story about human adapting to alien environment
158928
Looking for a book, wormhole, space ship Crash landing
17303
Young adult book about a boy(?) who gets sent through a portal to another world which is really the distant future
118194
Looking for the title of a book about alien invasion, mining asteroids and using lasers to defend earth
154388
Sci-Fi book with 4 prison planets
141943
80s/90s book where boy stumbles on game where aliens gamble their planets
111401
Short sci-fi story about Earth blockaded by other human colonies
118738
Need help to find a sci-fi collection I read at school (mid 80s)
17094
Identity novel, short story or book series... slower than light space battles, time dilation and boardings, several planets
147370
Seeking a book set underground on a hostile, volcanic colony world
42481
Desperately searching for sci-fi book with Cube on cover; characters killed off until one couple remains
40450
Sci-fi novel about man picked up by aliens to represent earth in battle against galactic invaders
62193
Trying to find a book about rediscovered space travel after interstellar war isolates planets
6794
Book about aliens arriving in an old country; people capture their spaceship and arrive at alien's planet
16594
Earth occupation/invasion book I read in the 90s
92271
70s/80s Sci-Fi book with teleport gates on sub-light spacecraft and an army space suit