From Wikipedia, the free encyclopedia
Jump to: navigation, search
Diagram showing the relationship between the zenith, the nadir, and different types of horizon. Note that the zenith is opposite the nadir.

In astronomy, the nadir is a point "below" a particular location. "Below" means in the same direction of gravity at that location. The nadir is the opposite of the zenith. The nadir is not a real point. It is used as a reference for the location of other things.

Related pages[change | change source]

References[change | change source]

  • Glickman, Todd S. (2000). Glossary of meteorology. American Meteorological Society. ISBN 978-1-878220-34-9
  • Picoche, Jacqueline (2002). Dictionnaire étymologique du français. Paris: Le Robert. ISBN 978-2-85036-458-7