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Delwedd:Muriel E Mussells Seyfert.png

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English: Black and white photograph of Muriel E.Mussells Seyfert at a light table. Original description from the Smithsonian Institution Archives site: Muriel E. Mussells Seyfert (b. 1909) was an astronomer at Harvard College Observatory and had just discovered three new ring nebulae in the Milky Way when this photograph was taken, March 1936
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16 Mawrth 1936

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