An observer's nadir is
A)the point directly opposite the observer's zenith.
B)the north point on the observer's horizon.
C)located at the center of Earth.
D)always located near a circumpolar constellation.
E)directly opposite the north celestial pole.

Question

Quizplus · Accepted Answer

The nadir is the point directly opposite an observer's zenith, meaning it is the point on the celestial sphere directly below an observer or the point on the Earth's surface directly beneath an observer.

An Observer's Nadir Is