Professor Stephen Hawking of the University of Cambridge, makes remarks at an event marking the 50th anniversary of NASA, Monday, April 21, 2008,at George Washington University in Washington. Credit: AP Photo/Lawrence Jackson.
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Professor Stephen Hawking of the University of Cambridge, makes remarks at an event marking the 50th anniversary of NASA, Monday, April 21, 2008,at George Washington University in Washington. Credit: AP Photo/Lawrence Jackson. |
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