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Carl Sagan Writes a Letter to 17-Year-Old Neil deGrasse Tyson (1975)
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Carl Sagan Writes a Letter to 17-Year-Old Neil deGrasse Tyson (1975)

openculture.com - by Jonathan Crow

Carl Sagan, the turtleneck-sporting astrophysicist from Cornell, was the greatest communicator of science of his generation. Not only did he publish …

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