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Parsec - Wikipedia) from the Sun. [2] Most of the stars visible to the unaided eye in the night sky are within 500 parsecs of the Sun. [citation needed]
The parsec unit was probably first suggested in 1913 by the British astronomer Herbert Hall Turner. [3] <span>Named as a portmanteau of the parallax of one arcsecond, it was defined so as to make calculations of astronomical distances quick and easy for astronomers from only their raw observational data. Partly for this reason, it is the unit prefer Summary
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