Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.0
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1844
Points per Word
0.000271
Page Count
40
Points per Page
0.0125
Series
Images
Description
Reviews the history of Earth's observation of the red planet since ancient times, and looks at the results of modern scientific studies carried out by telescope, satellite, and landing probe.