Multiple Choice
A parsec is
I. a unit of length used in astronomy
II. 2.06 × 105 AU
III. the distance to an imaginary star whose stellar parallax is one arc second
IV. 3.26 light years
V. the longest unit of length in astronomy
A) I, II, V
B) II, IV
C) I, III, IV, V
D) I, II, III, IV, IV
Correct Answer:
Verified
Correct Answer:
Verified
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