Juvenile SF novel starting with a lost boy entering a dome run by an AI called "Ego"
37618
YA novel from pre-1980 set on the moon in which a boy is rescued by space gypsies
18560
YA novel where clumsy boy gains wings
100531
Novel about a teleportation device and a con artist alien
140684
SF story where man must answer questions to get to untold treasure
111731
Short story about a test subject pioneering with robot help that becomes less helpful
130761
Short story about a robot who wants to become a writer
18774
Novel about teleportation and a child assumed to be the savior of the galaxy
29380
YA series with a housekeeper or protector robot and set on a planet with a harsh sun
137668
Fantasy novel about kid who controls magic through coin changer device
142054
Seeking title / author of a story about alien first contact with Earth
93979
Help Identifying a Sci-Fi Book: Humans transported to alien world and given tasks to escape
81915
70s(?) science fiction novel: teenage boy builds his own spacecraft which pulls/pushes gravity, is stranded on Mars when a vacuum tube burns out
144365
YA book about two boys, a parallel universe, and a wolf
69433
Boy goes insane during space travel
50462
Novel(s) based on humanity fleeing from Earth and regressing to a pre-industrial state on a Colony so as to escape detection
94172
Science Fiction story about humans escaping earth's destruction
70546
Children's sci-fi book with an alien named Yacob looking for a kid with technology