UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is an astronomical unit (A.U.)?
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the time it takes light to travel one year
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the distance between the Earth and the Moon
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the distance between the Earth and the Sun
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the distance between the Earth and the Neptune
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Explanation:
Detailed explanation-1: -astronomical unit (AU, or au), a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149, 597, 870.7 km (92, 955, 807.3 miles).
Detailed explanation-2: -An astronomical unit (AU) is the mean distance between the center of the Earth and the center of the sun. The actual distance varies depending on the time of year, because the Earth’s orbit around the sun is not a perfect circle.
Detailed explanation-3: -An astronomical unit is an average distance between the Earth and the Sun.
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