Reading Metrics
Grade Level
Upper Grades (UG 9-12)
Book Level
6.4
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2011
Points per Word
0.000249
Page Count
32
Points per Page
0.015625
Series
Gateway Solar System
Description
Presents information on Mercury, the planet closest to the sun, as it was photographed by the U.S. spacecraft, Mariner Ten.