A light-year is a unit of distance, not time, representing how far light travels in one year at approximately 300,000 kilometers per second; since light can circle Earth about 7 times in one second, over the course of a full year, it covers an enormous distance of about 9.46 trillion kilometers, making the light-year a practical measurement for expressing vast cosmic distances between celestial objects.
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What Is a Light-Year? ✨ #shorts #lightyearAdded:
Light travels at a speed of about 300,000 km per second.
If something travels at the speed of light for 1 year, the distance it covers is called one light-year.
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