Question

What is the difference between an astronomical unit and a light year?

Answer 1

Astronomical unit is the average distance between Earth and SUn .It is 149597870 Kilometers..Light is the distance light travels in vacuum in one year.

Explanation:

Light travels 300,000 kilometers in vacuum in one second. So mulitly it by 60x24x365.242x300,000 kilometers is the light year.
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