Concept explainers
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk(*) designates a quantitative problem, for which you should show all your work.
Supernova Betelgeuse. The best current estimate of the distance from Earth to the red supergiant. Betelgeuse is about 600 light-years. If it were to explode as a supernova, it would be one of the brightest stars in the sky. Right now, the brightest star other than the Sun is Sirius, with a luminosity of
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COSMIC PERSPECTIVE FUNDAMENTALS(LL+CODE
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