Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.2
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7834
Points per Word
0.000128
Page Count
40
Points per Page
0.025
Description
Photographs, drawings, and illustrations provide facts, stories, and activities about the solar systems and possible life on planets beyond Earth's solar system.