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Observations of sunspots, May 1644

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Observations of sunspots, May 1644. On right is a large spot which is shown in a series of successive positions due to the Sun's rotation. From "Selenographia" by Johannes Hevelius (Gedani, Gdansk, Danzig, 1647). Engraving.

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Photos12.com - Ann Ronan Picture Library

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Photo12/Ann Ronan Picture Library

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ARP07113_010547P

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Droits gérés

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35.7Mo (1.4Mo) / 30.0cm x 29.8cm / 3543 x 3522 (300dpi)