Question

find out how many kilometre is one light year and write it down in you science diary​

Answer 1

Answer:

mentioned above, light travels at an incredible 186,000 miles per second (300,000 km/sec). That’s very fast. If you could travel at the speed of light, you would be able to circle the Earth’s equator about 7.5 times in just one second!

In other words, a light-second is the distance light travels in one second, or 7.5 times the distance around Earth’s equator. A light-year is the distance light travels in one year.

How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It’s about 5.9 trillion miles (9.5 trillion km).

Answer 2

Answer:

9.461 ×10¹²

Explanation:

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