WASHINGTON, DC - NOVEMBER 12: Some examples of the Carl Sagan Papers on display at the Celebration Of Carl Sagan at The Library of Congress on November 12, 2013 in Washington, DC. (Photo by Paul ... more 
WASHINGTON, DC - NOVEMBER 12: Some examples of the Carl Sagan Papers on display at the Celebration Of Carl Sagan at The Library of Congress on November 12, 2013 in Washington, DC. (Photo by Paul Morigi/Getty Images) less 
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Getty Images | Photo By Paul Morigi / Getty Images
Tue, Nov 12, 2013 2:23 PM EST