jerlin1103 jerlin1103

06-10-2017
Physics

contestada

define light yearend explain how and why light years are used to measure distances in the universe

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eduardoenmanuel eduardoenmanuel

12-10-2017

Light years are the distance light can travel in a full year. They are used because there are really big distances in the universe that are easier to measure with a really large form of measurement (light years).

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