Answer: The average distance between the Earth and the Sun
Explanation: Distance in the solar system (stellar system) is measured in terms of astronomical units due to large distances involved. 1 astronomical unit is equal to nearly 150 million kilometers.
Distances beyond our solar system are usually measured in light years. For example, The distance of stars from the earth are measured in light years.
1 light year is nearly equal to 6 million million miles.
