Astronomy: an atmospheric condition giving the effect of two suns. Engraving by A. Hay, 1820, after H.D. Craig.
Wellcome Collection

Astronomy: an atmospheric condition giving the effect of two suns. Engraving by A. Hay, 1820, after H.D. Craig.

H. D. Craig · 1820

CC0 — Public Domain
Wellcome Collection

Lettering: Two mock suns.

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