Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.6
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4887
Points per Word
0.000205
Page Count
48
Points per Page
0.020833
Series
Countdown to Space
Description
This book is the history of the development of spy satellites beginning with the Corona in the 1950s and includes information about space surveillance over the Soviet Union and secrecy of the program.