The Ptolemaic model of the universe:. Physics & Astronomy

2019-11-14 19:32:04
Physics & Astronomy

is the basis of our modern cosmology.
describes the orbits of the planets as being ellipses, not circles.
always kept Mars and Mercury between the Earth and Sun.
explained and predicted the motions of the planets with deferents and epicycles
could not account for the stellar parallax observed by Hipparchus

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