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/img/iea/bjOLknylwe/what-is-lightyear.jpg "Light year: What is a light year and How long is a light year")
Light year: What is a light year and How long is a light year
Light Year: Meaning, Definition, Unit of, Measure of
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14 Light-year Synonyms. Similar words for Light-year.
How long is a light-year?
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