What unit of measurement, equal to about 3.26 light-years, is often used by astronomers to measure distances to stars?
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Parsec
The name 'parsec' stands for 'parallax of one second.' It is derived from a method of calculating distances by observing how a star's position shifts relative to distant stars as Earth orbits the Sun.
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- What astronomical unit of distance is equivalent to approximately 3.26 light-years?