Question:
Parsec is a unit used to measure which quantity?
Parsec is a unit used to measure which quantity?
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This unit is connected to measuring how far away stars and galaxies are.
Updated On: Jul 16, 2026
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Solution and Explanation
The correct answer is astronomical distance.
A parsec is a unit used by astronomers to measure very large distances in space, such as the distance between stars or galaxies. One parsec equals about 3.26 light years.
The term comes from combining parallax and second, since it is based on the parallax angle of one arcsecond observed from Earth's orbit. Astronomers prefer parsecs over kilometers because space distances are simply too large for smaller units to be practical.
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