The Pluto Files (NOVA): Since its discovery in 1930, Pluto has held a warm place in the public imagination. So, when the American Museum of Natural History s Hayden Planetarium stopped calling Pluto a planet, director Neil deGrasse Tyson found himself at the center of a... (more details for The Pluto Files (NOVA))

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File by Carrie Mueller (#2354)
2013-05-06 Grade: 9-10