what is a light year
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The light-year is a unit of length used to express astronomical distances. It is about 9.5 trillion kilometres or 5.9 trillion miles
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the astronomical distance that light travel in 1 year
speed of light = 3×10 to the power 8m/s
time = 1 year = 365 ×24 ×60×60 sec
u can take distance with s=d/t
that is equal to 9.46080×10 to the power 15 m
speed of light = 3×10 to the power 8m/s
time = 1 year = 365 ×24 ×60×60 sec
u can take distance with s=d/t
that is equal to 9.46080×10 to the power 15 m
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