Earth Shaker - #AstroMeme How far is far? We often measure distances in space using astronomical units (AU) and light-years (ly) because of the superb distances. 1 Astronomical Unit (AU) - average
![One light year is equal to the distance traveled by light in one year (through empty space). One light year = 1 ly = 6 trillion miles = 9.5 trillion. - ppt download One light year is equal to the distance traveled by light in one year (through empty space). One light year = 1 ly = 6 trillion miles = 9.5 trillion. - ppt download](https://slideplayer.com/slide/14734682/90/images/4/Calculating+a+light+year.jpg)
One light year is equal to the distance traveled by light in one year (through empty space). One light year = 1 ly = 6 trillion miles = 9.5 trillion. - ppt download
![A light year (ly) is a unit of distance defined as the distance light travels in one year. Numerically, 1 ly= 9 500 000 000 000 km. How many metres are in a light year? A light year (ly) is a unit of distance defined as the distance light travels in one year. Numerically, 1 ly= 9 500 000 000 000 km. How many metres are in a light year?](https://d10lpgp6xz60nq.cloudfront.net/question-thumbnail/en_645590290.png)
A light year (ly) is a unit of distance defined as the distance light travels in one year. Numerically, 1 ly= 9 500 000 000 000 km. How many metres are in a light year?
![relativity - Is a light year a different distance if measured from a moving object? - Physics Stack Exchange relativity - Is a light year a different distance if measured from a moving object? - Physics Stack Exchange](https://i.stack.imgur.com/KCQz4.png)