Question

what is mean by astronomical unit​

Answer 1

Explanation:

The astronomical unit is a unit of length, roughly the distance from Earth to the Sun and equal to about 150 million kilometres or ~8 light minutes. The actual distance varies by about 3% as Earth orbits the Sun, from a maximum to a minimum and back again once each year. Wikipedia

Unit of: Length

1 au or AU 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 or AU or AU

Imperial & US units: 9.2956×107 mi

Astronomical units: 4.8481×10−6 pc; 1.5813×10−5 ly

Answer 2

Answer

The astronomical unit is a unit of length, roughly the distance from Earth to the Sun and equal to about 150 million kilometres or ~8 light minutes. The actual distance varies by about 3% as Earth orbits the Sun, from a maximum to a minimum and back again once each year.