Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.2
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2685
Points per Word
0.000186
Page Count
32
Points per Page
0.015625
Series
Explore Outer Space
Description
This book explains what quasars and black holes are and how astronomers explore them.