celestial equator is the great circle in which the plane of the terrestrial Equator intersects the celestial sphere; it consequently is equidistant from the celestial poles. When the Sun lies in its plane, day and night are everywhere of equal length, a twice-per-year occurrence known…

What is the celestial equator quizlet?

The celestial equator is an imaginary plane that divides the celestial sphere into North and Southern hemispheres.

What is the difference between the equator and the celestial equator?

The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth. ... In other words, the celestial equator is an abstract projection of the terrestrial equator into outer space.