Zoom into the central light-year. Color images show CO (J=3-2)... | Download Scientific Diagram
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A light year (ly) is a unit of distance defined as the distance light travels in one year. Numerically, 1 ly= 9 500 000 000 000 km. How many metres are in a light year?
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What Is a Light-Year? | NASA Space Place – NASA Science for Kids
How to Calculate a Light Year: 10 Steps (with Pictures) - wikiHow
What is a light-year and how is it used??
How far is a light-year? | Astronomy Essentials | EarthSky
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A light year (ly) is a unit of distance defined as the distance light travels in one year. Numerically, 1 ly= 9 500 000 000 000 km. How many metres are in a light year?
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