Why is a parsec useful in astronomy?
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The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System. ... Named as a portmanteau of the parallax of one arcsecond, it was defined to make calculations of astronomical distances from only their raw observational data quick and easy for astronomers.
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The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System. ... Named as a portmanteau of the parallax of one arcsecond, it was defined to make calculations of astronomical distances from only their raw observational data quick and easy for astronomers.
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