What distance was used to define the astronomical unit (AU) ?

A) the average distance across the sun, its diameter

B) the average distance from the sun to Mercury, the closest planet

C) the average distance from the sun to Earth, our home planet

D) the average distance from the sun to Neptune, the farthest planet

Question

Urijah Hayden

Biology

4 July, 08:50

What distance was used to define the astronomical unit (AU) ?

A) the average distance across the sun, its diameter

B) the average distance from the sun to Mercury, the closest planet

C) the average distance from the sun to Earth, our home planet

D) the average distance from the sun to Neptune, the farthest planet

+3

Answers (1)

Know the Answer?

Clay Mcdowell · Answer 1

The average distance from the sun to Earth

Explanation:

Astronomical unit is defined as the the average distance from the center of the earth to the center of the sun. It is represented by AU. The value is equal to a unit of measurement of 149.6 million kilometers. An Astronomical Unit is approximately equal to 93 million miles (150 million km). It's approximately 8 light-minutes. Astronomical units are usually used to measure distances in solar system.