Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.9
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2907
Points per Word
0.000172
Page Count
32
Points per Page
0.015625
Description
This book examines the methods used by ancient astronomers to study the sky and includes some of the astronomers' most exciting discoveries. The text has been revised and updated by Richard Hantula.