Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.5
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7174
Points per Word
0.000139
Page Count
48
Points per Page
0.020833
Description
Scientists and astronauts use problem-solving skills to find answers to difficult questions involving the solar system's outer planets.