Question

An Astronomical Unit, or AU, is the average distance between

• A. The Sun and Neptune
• B. The Sun and Earth
• C. The Earth and the Moon
• D. The Sun and Mercury

Hint:

Always associate 1 Astronomical Unit (AU) with the average Sun-Earth distance — a foundational concept in astronomy.

Answer 1

The Correct Option is B

An Astronomical Unit (AU) is defined as the mean distance between the Earth and the Sun.
Its approximate value is \( 1.
496 \times 10^{11} \) meters.
It serves as a convenient unit for measuring distances within our solar system.