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alpha centauri has an apparent magnitude of zero. alpha centauri is 4.2 light years (1.3 pc)...

alpha centauri has an apparent magnitude of zero. alpha centauri is 4.2 light years (1.3 pc) away from our solar system. if you were to replace the sun with alpha centauri, how much more luminous, compared to the sun would that star appear from earth?

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