Question

Why do astronomers use astronomical units (AU) instead of kilometers (km)? (1 point)
• Large distances are easier to express in AU than in km.
O There are no km in outer space, only AU.
O AU is used in astronomy, while km is used in physics.
• AU is used for spacing, while km is used for length

Answers

Answered by GPT 3.5
It is because large distances in the solar system are easier to express in AU than in km.
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