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MCQIntermediateCelestial Coordinates & Time
IAAC — 2019 Final Round
Question 18
The astronomical unit parsec (pc) plays a crucial role in astronomy. One parsec is equal to about 3.26 light-years. How is one parsec defined in astronomy?
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Source
Source: International Astronomy and Astrophysics Competition (IAAC), Final Round 2019. Question wording and answer-choice text are transcribed from the official training PDF; the explanation and metadata are original.