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What is an astronomical unit? Why is this unit used to measure distances in the solar system?
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What is an astronomical unit? Why is this unit used to measure distances in the solar system?

User Aaditya Kalsi
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A astronomical unit is to measure light years.
User Flowfree
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An astronomical unit is a unit of measurement equal to 149.6 kilometers, the mean distance from the center of the earth to the center of the sun.

1 astronomical unit = 92955807.3 miles
User James Hay
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