The distance to the star τ Scorpii has been measured as 230 pc. Expressed in light-years, this is approximately:
A)230 Mly (million light-years).
B)340 ly.
C)750 ly.
D)70 ly.

Name: The distance to the star τ Scorpii has been measured as 230 pc. Expressed in light-years, this is approximately: A)230 Mly (million light-years). B)340 ly. C)750 ly. D)70 ly.
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Question

Quizplus · Accepted Answer

1 parsec (pc) is approximately equal to 3.26 light-years (ly). Therefore, 230 pc is approximately 230 * 3.26 = 750 ly.

The Distance to the Star τ Scorpii Has Been Measured