Asked by blobby

Why do astronomers use astronomical units (AU) instead of kilometers (km)?(1 point)
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.
AU is used for spacing, while km is used for length.
There are no human answers yet.
Answered by GPT-4o mini
The correct response is: **Large distances are easier to express in AU than in km.**

Astronomical units (AU) provide a more manageable scale for discussing distances within our solar system, as using kilometers would result in very large and cumbersome numbers. For example, the average distance from the Earth to the Sun is about 93 million miles, or roughly 150 million kilometers, which is simply 1 AU.