The system of declination and right ascension is similar to the system of latitude and longitude used on the surface of Earth. In the Earth system, the zero of longitude is called the
A) prime meridian.
B) international date line.
C) great circle.
D) terminator line.

Question

Quizplus · Accepted Answer

The prime meridian is the reference line from which longitude is measured on Earth, similar to how the zero point of right ascension is defined in celestial coordinate systems.

The System of Declination and Right Ascension Is Similar to the System