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The Pluto Discovery Plates

Filed under pretty pictures, history, trans-neptunian objects, Pluto, dwarf planets beyond Neptune

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The Pluto Discovery Plates The photographic plates, taken 6 days apart with the 13 inch telescope, with which Clyde Tombaugh discovered Pluto. The arrows point to the position of Pluto on each of the two days.

Lowell Observatory Archives

Original image data dated on or about January 29, 1930

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