This tag should be used for questions about Robert Heinlein's 1948 young adult science fiction novel of the same name.
Space Cadet is the story of a Matt Dodson, a young Iowan who seeks to join the Space Patrol in 2075.
After passing the necessary tests and completing his training, Dodson is assigned to the Patrol ship Aes Triplex, which is involved in adventures in the Asteroid Belt and on the planet Venus.