Define a Parsec.
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a unit of distance used in astronomy, equal to about 3.26 light years (3.086 × 1013
kilometres). One parsec corresponds to the distance at which the mean
radius of the earth's orbit subtends an angle of one second of arc.
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A unit of distance used in astronomy, equal to about 3.6 light years. One parsec corresponds to the distance at which the mean radius of the earth's orbit subtends an angle one second of arc.
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