Sunspot drawing from 1894
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Sunspot drawing from 1894

by Konstantinos Kourtidis, Demokritus University of Thrace, Xanthi, Greece

A drawing of sunspots from 16 August 1894 by E. M. Antoniadis (https://en.wikipedia.org/wiki/E._M._Antoniadi) At the left bottom corner, a drawing shows the relative size of the Earth.