Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
5.1
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1931
Points per Word
0.000259
Page Count
32
Points per Page
0.015625
Description
This book describes how gravity, escape velocity, and the speed of light help scientists study the black holes created when stars die. Text includes full-color photographs.