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Planar orbits?

  1. Jan 9, 2008 #1
    Why do the elliptical orbits of the planets in our solar system rotate on a single plane.
  2. jcsd
  3. Jan 9, 2008 #2
    Because they were all formed from a single disk. The plane is also the equatorial plane of the sun.
  4. Jan 9, 2008 #3
    Oh, I see so there are no external forces that would cause the planets to go up or down out of the orbital plane. Is there any type of 3-d graphic phys let out there that shows this process from the beginning to the forming of the planets.
  5. Jan 9, 2008 #4
    Not all the planets are in the same plane, their orbit planes can be tilted a bit. Probably because of impacts in the past. Impacts also are believed to be the reasons for eccentricity of the orbits
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