Question

The Astronomical Unit (AU) is a unit of measurement based on the average distance between what two bodies?

• A. The Earth & The Sun
• B. The Earth & The Moon
• C. The Sun & Pluto
• D. The Sun & Jupiter

Answer 1

The correct option is A

The Earth & The Sun

Astronomical unit is used to measure distances in solar system. It is equal to the average distance between the earth and the sun.
$1au\approx 1.5\times {10}^{11}m$