The zenith is the point in the sky that is directly above an observer's position on the Earth's surface. It represents a 90-degree angle from all points on the horizon.
5 Must Know Facts For Your Next Test
The zenith is always located directly overhead regardless of the observer’s geographical location.
Astronomers use the zenith as a reference point for measuring celestial objects' positions.
At the equator, celestial objects can pass through or near the zenith if their declination is zero.
The altitude of the zenith is always 90 degrees above the horizon.
In astronomy, observing stars at their highest point, when they cross the meridian near the zenith, reduces atmospheric distortion.