Air and Space: The Pluto Discovery Telescope, Lowell Observatory, Flagstaff, Arizona, 2002. Clyde Tombaugh discovered Pluto by analyzing photos from this telescope in 1930. [#497-3720] Click on image for next photo.

The Pluto Discovery Telescope, Lowell Observatory, Flagstaff, Arizona, 2002.  Clyde Tombaugh discovered Pluto by analyzing photos from this telescope in 1930.  Click for next photo.

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All photos 1998-2019 by Thomas O'Neil