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What are light years used to measure?

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What are light years used to measure?
o the brightness of stars in the night sky
o distances between objects in the universe
o how fast light can travel in different mediums
o the time it would take to travel between objects in the universe




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    1. Quizzma Team

      Light years are used to measure distances between objects in the universe. A light year is defined as the distance that light travels in one year, which is about 5.88 trillion miles (9.46 trillion kilometers). This unit helps astronomers describe vast distances that are too great for conventional measurements.

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