Reading Metrics
Grade Level
Lower Grades (LG K-3)
Book Level
4.1
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
1181
Points per Word
0.000423
Page Count
32
Points per Page
0.015625
Description
This introduction to black holes discusses how they form and how they are studied and discovered and examines what scientists know about them.