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Credit & Copyright:   
 
  
  
Explanation:
Albert   
Einstein (1879-1955) is considered by many the greatest astrophysicist.  He is  
pictured here in the Swiss Patent Office where   
he did much of his great work.    
Einstein's many visionary scientific contributions include the  
equivalence of mass and energy (E=mc^2), how the maximum speed limit of light  
affects measurements of time and space   
(special relativity), and a more accurate theory of gravity based on   
simple geometric concepts   
(general relativity).  One reason   
Einstein   
was awarded the 1921  
Nobel Prize in Physics was to make the prize more prestigious.  
  
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NASA Official: Jay Norris. Specific rights apply.
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Based on Astronomy Picture
Of the Day
Publications with keywords: time - space
Publications with words: time - space
See also:
