Reading Metrics
Grade Level
Upper Grades (UG 9-12)
Book Level
10.5
Points
13.0
Fiction/Nonfiction
Nonfiction
Word Count
61832
Points per Word
0.00021
Page Count
292
Points per Page
0.044521
Description
Marking the tenth anniversary of a worldwide science classic, this fully updated edition is enriched with a new introduction by Professor Hawking and an entirely new chapter on wormholes and time travel.