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Astronomical Unit (AU) The distance from the Earth to the sun. On average, the sun is 149,599,000 kilometers from Earth.
Astronomical Unit
(abbrev. AU)- The mean earth-sun distance, equal to 1.496x1013 cm, or 214.94 solar radii.
ATC ...
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Aphelion, apogee, Astronomical Unit, perigee, Perihelion, recurrence, Rotation, Solar Noon, Tidal Cycle, Tide Prediction ...
 See also: Meteor, Model, Thermal, Cyclone, Minimum
  
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