The Magic School Bus Chapter Book #4: Space Explorers

The Magic School Bus blasts off on a tour of the Milky Way planets, and the kids discover how the other planets are different from Earth. Not only do they all have different temperatures, but each planet has a different atmosphere as well. Ms. Frizzle's class finds out how far away the planets are, and how long it would really take to get there if they didn't have a Magic School Bus.