Why do astronomers use light year
to measure the distance between
the planets?
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0
Answer:
Measuring in light-years also allows astronomers to determine how far back in time they are viewing. Because light takes time to travel to our eyes, everything we view in the night sky has already happened. In other words, when you observe something 1 light-year away, you see it as it appeared exactly one year ago.
Explanation:
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Answered by
1
Answer:
By the help of light year astromer measur the distance because when the ligth speed is known and time taken is also known so the astromers measure the distance by formula: Distance=speed*time
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