Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.5
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4066
Points per Word
0.000246
Page Count
32
Points per Page
0.03125
Series
Space Guides
Description
This book chronicles the history of the solar system and the planet Earth, discussing how Earth has evolved and changed over time.