Vesto Slipher's specrograph.
Used to work out redshift of distant objects that finally led to the understanding of the expansion of the universe. Taken with a D60 at Lowell Observatory, Flagstaff, AZ
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Media ID | 200908171342560 |
Date | Wednesday, August 12 2009 @ 01:33 PM EDT |
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Views | 2477 |
Uploaded By | SJPorter |