IT IS TOLD THAT LIGHT FROM STARS TAKES YEARS TO REACH US SO ARE WE LOOKING AT PAST WHEN WE LOOK AT STARS?

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Solution

Hi! Arun,

Light from stars, which are light years away from Earth, will take years to reach earth. One light year is the distance travelled by light by one year. One light year = 9,460,730,472,580.8 km. If we are looking a star which is one light year away from us, then we are seeing the light emitted by the star in the previous year.

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