The star Fomalhaut has an apparent magnitude of 1.15 and an absolute magnitude of 2.0. From this information (assuming that the starlight has not been dimmed by interstellar clouds) , one can say for sure that Fomalhaut is _____.
A) brightest in blue light
B) less than 10 pc away
C) brightest in red light
D) more than 10 pc away
Correct Answer:
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