Clyde Tombaugh
by Science Source
Title
Clyde Tombaugh
Artist
Science Source
Medium
Photograph - Photograph
Description
Clyde Tombaugh using the blink comparator to check images of night sky taken at the same time a few nights apart. Stars remain fixed in the sky, so any sign of movement among them on Tombaugh's photographic plates would indicate that the 'star' was in fact a planet.
Uploaded
March 7th, 2013
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