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Carl Sagan's Speech On Humanity Is Incredible And Humbling

Carl Sagan was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences. He died at the age of 62 in 1996.
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PepperPeanut
PepperPeanut
Uploaded 08/23/2019
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