134 BCE Astronomy

The book of science

Tom Sharp

Hipparchus astronomy Astronomy



Predictive astrology

Predictive astronomy did not begin with Hipparchus, and of course his model of the universe was geocentric. Apparently Hipparchus tried to calculate a heliocentric system but gave it up when he found that orbits could not be circular as required by the current conception of the universe as taught by Plato and Aristotle.

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