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A light year is the distance that light will travel in a vacuum in a year. Nothing can travel that distance in an hour so a lightyear per hour is a meaningless concept of speed.

Though impossible to attain, it is a measure of speed while a kilometre is a measure of distance. There is no direct relationship between the two.

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15y ago

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Related Questions

How many kilometers are there in one lightyear?

9.461*1012 kilometres, approximately.


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What does kph mean?

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How many lightyears does it take sunlight to reach earth?

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