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8. Imagine two stars that are both the same temperature and therefore the same luminosity. Star
A is three times as far from Earth as Star B, and therefore Star B looks brighter. a. How much
brighter does Star B look than Star A? Show your work. Hint: Find F B / F A . b. Now image
that Star A's luminosity is twice as great as Star B's luminosity. Which star appears brighter?
Show your work.

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