facts about light years

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06-02-2015
Physics

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facts about light years

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anjalee anjalee · Answer 1 · 2015-02-06T17:58:17-05:00

A light-year is how astronomers measure distance in space.
-Light can travel 300,000 kilometres in one seconds!
Light year is the distance that light travel can travel in one year.
-Light can also travel 9,00,000,000,000 kilometers.
-One light is about 10 trillion km.
-Almost 300 years ago ,a Danish scientist named olaus roemer,was the fist man to estimate the distance light travels in a year -and using that he figure out the approximate speed of light!

tinavayalil tinavayalil · Answer 2 · 2015-02-06T19:36:09-05:00

tinavayalil tinavayalil

06-02-2015

i learn this in school a light years is how fast light can tralw in space i do not know how to spell that word

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