Reference Terms
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Equatorial bulge

An equatorial bulge is a planetological term which describes a bulge which a planet may have around its equator, distorting it into an oblate spheroid.

Because of a planet's equatorial bulge, its gravitational field is weaker at the equator than at its poles.

Note:   The above text is excerpted from the Wikipedia article "Equatorial bulge", which has been released under the GNU Free Documentation License.
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October 6, 2015

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