Boy gets transported to a planet where people can transform into different species
4871
What young adult SF book is about a boy saved by aliens and domed colonies?
13157
Young boy living on Mars discovers that his parents are robots
29564
Trying to remember a book about a human male travelling to alien planet
14915
Story about lost colonized planet sent into orbit around "free" star
27989
A book in which every species on earth was rendered intelligent
70546
Children's sci-fi book with an alien named Yacob looking for a kid with technology
45497
Story about a deadly alien creature on another planet that has some chemical in its body that makes it faster
51413
Protagonist becomes the avatar of an alien deity and has to cope with adversary god
115750
Movie that had a nerd kid who goes back to Arthurian period with scientific inventions and gadgets
109023
Story about two wizards from Earth's past who go on relativistic trips through space
103871
What is the series where humans are genetically altered to go under cover on alien planets?
156511
Science fiction about found children who are adopted into families and age quickly
101629
Story about a man and an alien exploring an alien world
114205
Children’s books, one in space setting, the other in a jungle
17303
Young adult book about a boy(?) who gets sent through a portal to another world which is really the distant future
113118
Film where boy's parent reveal their alien selves to him
12720
Short Sci-fi story about a sentient planet/creature that exists to seed the universe with life