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A TREASURE-TROVE OF 50,000 STARS
Photograph of the star cluster in Hercules by Mount Wilson Observatory through the 60-inch reflector.
[2]
Page:The Music of the Spheres.djvu/16
A TREASURE-TROVE OF 50,000 STARS
Photograph of the star cluster in Hercules by Mount Wilson Observatory through the 60-inch reflector.
[2]