What is Earth’s sphere of Influence (SOI)?
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- eAnswers...Dec 2, 2013
The Earth’s Sphere of Influence (SOI) is a symmetric ellipsoid around a celestial body where the primary gravitational influence on an orbiting object is that body. It is a branch in astrodynamics and astronomy. For more: http://en.wikipedia.org/wiki/Sphere_of_influence_(astrodynamics)
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