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This comes from Carl Sagan's Cosmos episode 7, "The Backbone of Night." Carl Sagan teaches children, at his former elementary school, about the Universe and our place within it. Near the end of this clip, is yet another of Carl Sagan's most profound messages: "There are in fact 100 billion galaxies, each of which contain something like a 100 billion stars....We find that we live on an insignificant planet, of a humdrum star, lost in a galaxy, tucked away in some forgotten corner of a universe, in which there are far more galaxies than people."

Carl, Sagan, Cosmos, Universe, Stars, Earth, Space, Astronomy, Science, Atoms, Chemistry, Physics, Math, Humanity, World