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LESSON 48 - Unlucky Coincidence
Origins

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Nature

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Carl Sagan

Carl Sagan was an American astronomer, astrophysicist, cosmologist, author and science communicator. His contributions were central to the discovery of the high surface temperatures of Venus. Sagan contributed to the scientific research of extraterrestrial life. He published more than 600 scientific papers and more than 20 books.






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