GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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kilometers
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billometers
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light years
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sound years
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Detailed explanation-1: -The astronomers usually use light-years to measure the distance between stars. A light-year is a distance of light that can travel in one year. The astronomers also use parsec .
Detailed explanation-2: -The distance traveled by light in one year. This unit is used to measure distances in space. Light travels 300, 000 km, equivalent to seven and a half laps around the Earth, in one second. Therefore, the distance traveled by light in one year is approximately 9.4605 trillion km.
Detailed explanation-3: -Many astronomical objects like stars or galaxies are very far away from the earth & giving their distances in the kilometres unit becomes very inconvenient. Light-year is a large unit and equals the distance travelled by light in one year. Hence, the large distances are expressed in light-years.