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What is a light year??

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What is a light year??

Posted by Arsh Kapoor 8 years, 5 months ago

CBSE > Class 08 > Science

1 answers

Arpita Banerjee 8 years, 5 months ago

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So,in one year, it can travel about 10 trillion km. More precisely, one light-year is equal to 1 light-year = 9460730472580800 metres (exactly)

Or, 1 light year =9.4605284 ×10¹⁵ meters = 9.4607 × 10¹² km (nearly 6 million million miles).

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