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.

Since light travels 300,000 kilometers in a vacuum in one second, the light year is equal to 60 x 24 x 365 = 300,000 kilometers.

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Answer 2

Levi Anderson

An astronomical unit (AU) is the average distance between Earth and the Sun (about 93 million miles or 150 million kilometers), while a light year is the distance light travels in one year (about 5.88 trillion miles or 9.46 trillion kilometers).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.