A Common Unit of Length in Astronomy Is the Parsec

question 52

Multiple Choice

A common unit of length in astronomy is the parsec, where 1 parsec = 3.26 light years. How many seconds does it take a radio signal to travel one parsec through space?

• A) 1.03 × 10⁸ s
• B) 9.71 × 10⁸ s
• C) 9.71 × 10⁷ s
• D) 1.72 × 10⁶ s
• E) None of the above.

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