Chapters adapted from “Universe” essays in Natural History magazine—Chapter 1: March 1998
and September 2003; Chapter 2: November 2000; Chapter 3: October 2003; Chapter 4: June
1999; Chapter 5: June 2006; Chapter 6: October 2002; Chapter 7: July/August 2002; Chapter
8 : March 1997; Chapter 9: December 2003/January 2004; Chapter 10: October 2001; Chapter
11 : February 2006; Chapter 12: April 2007.
Copyright © 2017 by Neil deGrasse Tyson
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