Super Glossary

Nadir

Science / Astrology / Nadir

Nadir: The point in the celestial sphere directly opposite the zenith; the point directly beneath an observer on Earth; the low point.

Related Words

Nadir: The point on any given observer's celestial sphere diametrically opposite of one's zenith.

Prime Vertical: The great circle that rises vertically from the east point of the horizon and passes through Earth's zenith and nadir.

Zenith: The point which is elevated 90 degrees from all points on a given observer's astronomical horizon. The point on any given observer's celestial sphere that lies directly above him. The opposi . . . View Full Definition

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