The comet of 812 directly approaching Earth. The

The comet of 812 directly approaching Earth. The crescent shapes are really streamers from the tail seen head-on, the central part of the crescents and the white patch above where they join is the head of the comet. From Historia universalis omulum cometarum by Stanislaus de Lubienietski (Amsterdam, 1666). Engraving

1666 Approaching Comet Crescent Crescents Directly Head-on Join Patch Really Shapes Stanislaus Streamers Universalis

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