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Why is the ecliptic plane relevant?

April 26, 2017Ecliptic plane relevant

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Why is the ecliptic plane relevant?

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The ecliptic plane is the plane in which the Earth orbits the Sun, and is also the plane in which the Sun appears to orbit the Earth. The “ecliptic” is the path the Sun takes in the celestial sphere: this is the intersection of the ecliptic plane with the imaginary celestial sphere.