Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.7
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
8352
Points per Word
0.00012
Page Count
64
Points per Page
0.015625
Series
Explore the Universe
Description
This introduction to quasars and black holes provides information about their formations and characteristics.