Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.1
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
8103
Points per Word
0.000123
Page Count
64
Points per Page
0.015625
Series
Explore the Universe
Description
Explore strange planets beyond the solar system, from massive rocky worlds to gas giants, and learn about the search for alien life.