What is a light-year and how is it used??
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What is the difference between an AU, light year, and parsec? When should each be used? - Quora
Parsec - Wikipedia
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A light year (ly) is the distance that light can travel
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How to Calculate a Light Year: 10 Steps (with Pictures) - wikiHow
How to Convert Parsecs to Light Years | Study.com
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Parsec - Wikipedia
How to Measure Things That Are Astronomically Far Away | WIRED
How to Convert Parsecs to Light Years | Study.com
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How to Convert Parsecs to Light Years | Study.com
Astronomical Unit | Light Years & Conversion - Video & Lesson Transcript | Study.com
How many parsecs are in a light year? - Quora
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How to Calculate a Light Year: 10 Steps (with Pictures) - wikiHow
Astronomical Unit, Light year , Parsec
Astronomical Unit, Light year , Parsec
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What are the advantages of the measurement parsecs over light years? - Quora
