define astronomical unit(A.U).
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Answer:
The astronomical unit is a unit of length, roughly the distance from Earth to the Sun and equal to about 150 million kilometres. The actual distance varies as Earth orbits the Sun, from a maximum to a minimum and back again once each year.
The astronomical unit is a unit of length, roughly the distance from Earth to the Sun and equal to about 150 million kilometres. The actual distance varies as Earth orbits the Sun, from a maximum to a minimum and back again once each year.
Unit of: Length
1 au, ua, or AU in: is equal to
Metric (SI) units: 1.495978707×1011 m
Unit system: Astronomical system of units; (Accepted for use with the SI)
Symbol: au, ua, or AU
Imperial & US units: 9.2956×107 mi
Astronomical units: 4.8481×10−6 pc; 1.5813×10−5 ly
OR
Definition of astronomical unit.
Definition of astronomical unit. For general reference, we can say that one astronomical unit (AU) represents the mean distance between the Earth and our sun. An AU is approximately 93 million miles (150 million km). It's approximately 8 light-minutes.