Relativity physics - When you talk about any Planet or Star and say that is 100 light years away from planet earth... Then no wonder many peoples Would think about what is
![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?
![A light year is the distance that light can travel in one year. 1 light year =9,460,000,000,000 km. a. Express one light year in scientific notation. b. The average distance between Earth A light year is the distance that light can travel in one year. 1 light year =9,460,000,000,000 km. a. Express one light year in scientific notation. b. The average distance between Earth](https://d10lpgp6xz60nq.cloudfront.net/web-thumb/643046153_web.png)