What were the major contributions of Ancient Greece to astronomy and astrology?

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What were the major contributions of Ancient Greece to astronomy and astrology?

Ancient Greece made significant contributions to both astronomy and astrology. In terms of astronomy, the Greeks were the first to propose a geocentric model of the universe, with the Earth at the center. They also developed the concept of celestial spheres, which suggested that the stars and planets were fixed on rotating spheres. Greek astronomers, such as Hipparchus and Ptolemy, made important observations and measurements, creating star catalogs and developing mathematical models to predict celestial movements.

In astrology, the Greeks believed that the positions and movements of celestial bodies could influence human behavior and destiny. They developed the zodiac, a system dividing the sky into twelve equal parts, each associated with a specific constellation. The Greeks also assigned specific meanings and characteristics to each zodiac sign, which formed the basis of astrological predictions and horoscopes.

Overall, the major contributions of Ancient Greece to astronomy include the geocentric model, celestial spheres, and advancements in observation and mathematical modeling. In astrology, their contributions include the development of the zodiac and the belief in celestial influences on human life.