The photographic plates were 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.
Credits: Lowell Observatory Archives; Planetary Society.org
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The photographic plates were 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.
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