Question

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Define Astronomical Unit. ​

Answer 1

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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.

Answer 2

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Define Astronomical Unit.

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• Astronomical Unit or AU is the average distance between the earth and the sun.
• These units are used to measure distance within the solar system.
• It's approximately 8 light minutes.