This Day in Jewish History / Man Whose Sky Charts Saved Columbus Is Born

Abraham Zacuto also predicted that Vasco da Gama would reach his destination, and wrote a groundbreaking astronomical treatise in Hebrew.

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August 12, 1452, is the birthdate of the Spanish-Jewish astronomer and historian Abraham Zacuto, who advised the court of Portuguese King John (or Juan) II, and whose state-of-the-art navigation innovations...