it was defined so as to make calculations of astronomical distances quick and easy for astronomers from only their raw observational data.
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Parsec - Wikipediaided 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] Named as a portmanteau of the parallax of one arcsecond, <span>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 preferred in astronomy and astrophysics, though the light-year remains prominent in popular science texts and common usage. Although parsecs are u Summary
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