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Shape of Orbits of Planets

  • Thread starter SandeshPhy
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  • #1
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Why are the orbits of planets revolving around a body(say the sun) elliptical rather than circular or any other shape?
Please show the answer mathematically.
 

Answers and Replies

  • #2
phyzguy
Science Advisor
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This page shows how Kepler's laws(including Kepler's first law that planetary orbits are ellipses) follow from Newton's laws of motion and Newton's law of universal gravitation.

http://en.wikipedia.org/wiki/Keplers_laws
 

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