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“pc”
A unit used with reference to distances to stars and galaxies: A parsec, short for "parallax section", is equal to the distance at which the mean radius of the Earth's orbit subtends an angle of one second of arc.
One parsec is equal to 3.2616 light-years, 2.063 x 105 astronomical units, and 3.086 x 1013 kilometers.
This entry is located in the following unit:
Astronomy and related astronomical terms
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