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What is a light year? How is it related ...

What is a light year? How is it related to metre?

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### Step-by-Step Solution: 1. **Definition of a Light Year**: - A light year is defined as the distance that light travels in one year. It is important to note that a light year is a unit of length, not time. 2. **Understanding Light's Speed**: - Light travels at a speed of approximately 299,792 kilometers per second (km/s) in a vacuum. ...
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