The Galaxy Jack Collection by Ray O'Ryan

The first four Galaxy Zack books are now available in one stellar boxed set!

Planet hop with Zack Nelson on his galactic adventures as he moves from Earth to Nebulon in the year 2120, explores a newly discovered planet, helps a dinosaur get back to its prehistoric home, and befriends a space monster!

Included in this out-of-this-world collection are Hello, Nebulon!, Journey to Juno, The Prehistoric Planet, and Monsters in Space! Beginning readers are sure to love these chapter books that are packed with cool futuristic adventures.
 
- Goodreads Summary