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Carl Sagan - Science Communicator

American astronomer, astrophysicist, cosmologist, author, science popularizer and science communicator in astronomy and natural sciences. This from Wikipedia...but to me, Carl had a way of using his voice that made listening to him and learning from him easy.
American astronomer, astrophysicist, cosmologist, author, science popularizer and science communicator in astronomy and natural sciences. This from Wikipedia...but to me, Carl had a way of using his voice that made listening to him and learning f...
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