tiles


Note:  Do not rely on this information. It is very old.

Equator

Equator is the great circle on the surface of the earth, equidistant from the poles. It is the greatest circle that can be drawn on the earth, and is 24,899 miles in circumference. The celestial equator is the great circle in the celestial sphere midway between the poles; it represents the intersection of the plane of the terrestrial equator with the celestial sphere.