Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.7
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
7309
Points per Word
0.000137
Description
From microbial life to Roswell, from the Drake Equation to the Fermi Paradox, this book traces the journey so far of scientific investigations into possible life on other planets.