Pluto's honor

Tyson, Neil de Grasse
February 1999
Natural History;Feb99, Vol. 108 Issue 1, p82
Reports that the planet Pluto might be expelled from the solar system as a planet. Distance of Pluto from the sun according to the orbital data on February 11, 1999; Discovery of Pluto by Clyde W. Tombaugh in 1930; Where the name of Pluto came from; Orbit; Definition of a planet; Form.


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