Responses
AU is used in astronomy, while km is used in physics.
AU is used in astronomy, while km is used in physics.
Large distances are easier to express in AU than in km.
Large distances are easier to express in AU than in km.
There are no km in outer space, only AU.
There are no km in outer space, only AU.
AU is used for spacing, while km is used for length.
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The correct response is:
Large distances are easier to express in AU than in km.
Astronomical units (AU) are more convenient for measuring the vast distances between objects in space, such as the distance from the Earth to the Sun, because using kilometers would result in very large and unwieldy numbers.
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