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How Long is a Light Year?
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Ahmad Sanusi Husain.Com: The Milky Way 🌠 1 light year is 6 trillion miles (9.6 trillion km)
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Objective 1 Compare the size and distance of objects within systems in the universe. Use the speed of light as a measuring standard to describe the. - ppt download
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Exit : Why is a light year called a light year? - ppt download
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Light Years
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