A line on the celestial sphere that divides it into two equal halves is a
A)Coordinate
B)Great circle
C)Second of arc
D)Circumpolar circle

Question

Quizplus · Accepted Answer

A line on the celestial sphere that divides it into two equal halves is called a great circle. A great circle is the largest circle that can be drawn on the surface of a sphere and it divides the sphere into two equal halves. Examples of great circles on the celestial sphere include the celestial equator and the ecliptic.

A Line on the Celestial Sphere That Divides It into Two