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Aquarium of Vulcan: Kepler and the Quincunx

Aquarium of Vulcan: Kepler and the Quincunx.

“The division between astrology and astronomy in Kepler’s day was quite blurred and not at all sharply delineated as nowadays. Throughout his life Kepler supplemented his income by regularly publishing calendars which predicted future events from astrology. For the year 1595 he prophesized a particularly cold winter, an attack by the Turks from the south and a peasant uprising: all of which occurred.”

Interesting blog post on the Aquarium of Vulcan