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perihelion and aphelionPerihelion is the point in the orbit of a body around an object where that body is closest to that object. For example, the closest point that the Earth’s moon gets in its orbit around the Earth is called the perihelion, the same with the earth orbiting around the sun. The aphelion is the farthest point away in the orbit.


About The Author

Matt Slick is the President and Founder of the Christian Apologetics and Research Ministry.