One Major Contribution of Ptolemy to the Development of Astronomy

question 24

Multiple Choice

One major contribution of Ptolemy to the development of astronomy was to

• A) develop and expand on a mathematical model for the solar system,in which planets move in epicycles around centers that move in circles around Earth.
• B) derive a mathematical model for the solar system,in which planets move around the Sun in circular orbits.
• C) originate the idea of a geocentric (Earth-centered)cosmology in which planets move in circles around Earth,which was later developed mathematically by Aristarchus.
• D) derive a mathematical model for the solar system,in which planets move around Earth in elliptical orbits,moving fastest when closest to Earth.

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