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    Units and Measurements of Astronomical Distances

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    What is an astronomical unit (AU)? What is that same unit in kilometers? How far is it to Pluto in AU? What is a parsec (pc)? How many AU are in a parsec? What is the distance to the nearest star (Proxima Centauri) in pc? What is a light-year? How many light-years are there in a pc? What is the size of the Milky Way galaxy in light-years?

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    Solution Summary

    The solution discusses units and measurements of astronomical distances.