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    Re: Ephemerides at Columbus' Time
    From: Alexandre Eremenko
    Date: 2012 Oct 25, 15:21 -0400

    Many mathematicians/astronomers
    did astrology for a living.
    Some even believed it. The most famous example is Kepler.
    (It seems that he indeed believed in astrology. For example, he composed
    and published a horoscope on himself).
    Ptolemy was famous not only for Almagest and Geography but
    for Tetrabiblos (a book on astrology).
    For example, our university library has Almagest and Tetrabiblos (several
    copies!) but does not have other books of Ptolemy (Geography, Handy
    Tables, etc.)
    And I suspect thast even Almagest survived to out time only because
    it was used by astrologers. (Hipparchus works did not survive).
    So astrology and astronomy were really inseparable during some preiod.
    (Science can exist only if someone pays for it. So there must be some
    demand. During a long period there was no much demand for "pure"
    astronomy or math).
    > Incidently, the English version of the Wikipedia article on Zacuto
    > *does*say he was an astrologer. ;-)
    > Yes but Zacuto was from Salamanca and the spanish version say he is
    > a mathematician and an astronomer  ;-)

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