How many Planets books are there?

There are 2 books in the Planets series by Jody Sullivan Rake, for ages 4-11.

Planets Books in Order — Wonderlit

Planets is a 2-book series for ages 4–11 by Jody Sullivan Rake. Each book stands alone — start anywhere.

Start anywhere — each book stands alone.

That said, Venus and Mars are great first picks.

No particular order needed — browse and pick what catches your eye.