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Because no other unit of distance is large enough. The closest star system to us is 4.2 light years away, which is about 25,000,000,000,000 miles.

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13y ago

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What is the units used to measure the distance of stars to the earth?

light years


Convert 70000 light years to earth calendar year?

Light years is a measure of distance, not of time; it is the distance that light travels in one year.


4.3light year is equais to how many earth years?

In spite of its name, a light year does not indicate time, but it indicates distance! It actually equates to the distance that light travels in one Earth year, which is a very big distance, seeing that light travels at 186,000 miles per second.


When should you use light years?

Light years are used to measure distance from Earth to distant stars and planets.


How many light years does it take to travel two and half earth years?

One light year is the distance that light travels in one year, which is approximately 5.88 trillion miles. Therefore, to travel a distance equivalent to 2.5 Earth years, you would need to travel about 2.5 light years, which is roughly 14.7 trillion miles.


What does 6300 light years equal to in earth years?

A light year is a measure of distance not time. A light year is the distance light travels in one year. So for light to travel 6,300 light years, would take 6,300 years


Is a light year measured in distance?

Not really. A light year is a measure of distance. It is the distance light can travel in one earth year, about 6 trillion miles


What is 123.23 light years in earth years?

If you are asking how long it would take to travel the distance of 123.23 light years, then that would depend on how fast you are traveling. Because a light year is a measure of distance not time.


Would it be inappropriate to measure the distance from Pluto to Earth in light-years?

Light years aren't the best, since it is only about 0.000624 light years away. Saying that the distance is 39 AU would be better. On the other hand, it's a much better unit than saying the distance is 3,229,510,630,000 fathoms.


What do light years measure in astronomy?

Light years measure distance in astronomy. It is the distance that light travels in one year, which is about 9.46 trillion kilometers.


What is the unit of measurement of the distances of the stars from the earth?

Light Year is unit for all astronomic distances


What is the distance in light years to a star located 100 light years away from Earth?

The distance to a star located 100 light years away from Earth is 100 light years.