Name of sci-fi book with Mars and intelligent spheres of light
118769
Story about Missionaries on Mars
90138
Old Sci-Fi book with skin crystalizing disease and characters with psi powers
51376
1970s (?) sci-fi book based on Hinduism/Buddhism
116812
Book: Brain swapping, alien conspiracy, space cruise
26358
Book about ancient Martian astronauts being the root of modern humanity and time travel
17712
Short story about aliens that are parts of a spaceship
50963
Story Identification: interplanetary war won by teleporting bombs past force fields
3083
Looking for the title of a futuristic book about enforced equality
4871
What young adult SF book is about a boy saved by aliens and domed colonies?
11855
Hunger games style alien book
88570
Sci-fi book where humanity is rebuilt on a new planet after being wiped out
56293
Looking for Space Exploration Book which is collection of different sub-stories
156747
Book series with a double planet system and poisonous bubbles that float around
102575
Sci-fi book with HUGE trees and catlike people
81779
Name of book about a man who was genetically modified during prehistoric times by aliens
23278
Books on cosmology
72061
Looking for a book about a crystal like prison planet