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Comet of December 1680 (Kirch), 1681. Isaac Newton calculated that the comet was travelling at 88, 000 mph and that it passed so near the Sun that at one time it was only 1/6 of the Suns diameter
Great comet of 1680 (Kirch) as it appeared as it approached the Sun. Isaac Newton calculated that the comet was travelling at 88
An Allarm to Europe By a Late Prodigious Comet, 1680. Title page of pamphlet by John Hill on the comet of December 1680 (Kirch)
