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black drop

A Cytherean thread?

A Cytherean thread?

Does this image by Dave McCarter hint at one of the black drop forms, namely a thread connecting Venus to the solar limb? See if you can discern it at lower left. Image courtesy of Dave McCarter (©Dave McCarter)

drawing of the black drop

drawing of the black drop

Recreation of 18th-century drawing of the black drop effect. Image courtesy of Specula astronomica minima (©Specula astronomica minima).

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