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When Betelgeuse goes supernova, its luminosity should peak at about 10^9 L⨀. (a) If its distance...

When Betelgeuse goes supernova, its luminosity should peak at about 10^9 L⨀. (a) If its distance from Earth is roughly 425 ly, what will be its apparent magnitude at peak luminosity? (b) How does this compare with Venus, at -4.4?

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