Question

what do you understand by the statement that is turned is 8 light years away from the Earth
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Answer 1

From the statement we under stand that something is away from disatnce that would take light 8 years to reach i.e.

the disatance covered by light in a year is known as lightyear here it is 8 light years so the distance light will travel ina period of 8 years is the disatnce.