Question

what do u mean by plane of ecliptic???

Answer 1

The plane of the ecliptic, also known as the ecliptic plane, is a phrase you will often hear in astronomy. A basic definition is that the plane of the ecliptic is the plane of the Earth's orbit, but that does not mean much to most people.

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Answer 2

Plane of ecliptic is the circular part of celestial sphere the sun appears to follow over the course of the year , it's the basis of ecliptic co ordinate system.