Authors@Google: Neil deGrasse Tyson

Neil deGrasse Tyson is discussing his book “The Pluto Files” … basically recounting a few thousand years of finding things in the night sky, naming them and building an understanding of what they are … case in point: (now dwarf planet 😉 ) Pluto … including his hypothesis on why Americans in particular get so worked up about Pluto not being a planet any more. 😀

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