Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
5.9
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1165
Points per Word
0.000429
Page Count
48
Points per Page
0.010417
Series
True Book
Description
Describes the orbit, rotation, temperature, and surface formations of the planet Mercury and the probe Mariner X that took pictures of it in 1974 and 1975.