The original 'Mr. Eclipse:' How a 19th-century astronomer calculated the dates of over 13,000 eclipsesThe original 'Mr. Eclipse:' How a 19th-century astronomer calculated the dates of over 13000 eclipses - Space.com
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For nearly a century, the 1887 book "Canon of Eclipses" was considered to be the authoritative work on solar and lunar eclipses.