Video: Carl Sagan "100 Billion Galaxies each W/100 Billion Stars" part of Carl Sagan

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Carl Edward Sagan ( /ˈseɪɡɪn/; November 9, 1934 – December 20, 1996) was an American astronomer, astrophysicist, cosmologist, author, science popularizer, and science communicator...

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Carl Sagan "100 Billion Galaxies each W/100 Billion Stars"

"There are in fact 100 billion galaxies, each of which contain something like a 100 billion stars. Think of how many stars, and planets, and kinds ...
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