Question

Which of the following best describes a constellation that is always above the horizon and never sets?

A. On the ecliptic
B. On the celestial equator
C. Circumpolar
D. In the zodiac

Answer 1

A circumpolar constellation is always above the horizon and never sets. In the north circumpolar zone, stars within a certain range of the North Pole can never set.

Step-by-step explanation:

A constellation that is always above the horizon and never sets is described as circumpolar. In the circumpolar zone, parts of the celestial sphere near the celestial poles are always above or below the horizon. For example, for an observer at a latitude of 38° N, stars within 38° of the North Pole can never set. They are always above the horizon, day and night. This is called the north circumpolar zone.