Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.5
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
8864
Points per Word
0.000113
Page Count
76
Points per Page
0.013158
Series
National Geographic Kids
Description
Text and illustrations describe what life on other planets might look like and how scientists find new worlds where life could exist.