The plane of the ecliptic intersects the celestial equator:
A) everywhere because these are two different names for the same plane.
B) at two points, the summer and winter solstices.
C) at two points, the vernal and autumnal equinoxes.
D) along the Prime Meridian.

Question

Quizplus · Accepted Answer

The plane of the ecliptic and the celestial equator are not the same plane, but the plane of the ecliptic is inclined to the celestial equator by about 23.5 degrees. The intersection of these two planes occurs at two points known as the vernal and autumnal equinoxes.

The Plane of the Ecliptic Intersects the Celestial Equator