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Rigel is hotter than Betelgeuse because it is a young, massive star in the early stages of its life cycle, while Betelgeuse is an older, cooler, and more evolved star. The higher temperature of Rigel is due to the intense nuclear fusion reactions happening in its core, which generate more heat and energy compared to Betelgeuse.
Betelgeuse is brighter.
No. Betelgeuse is in Orion.
No. Betelgeuse is a single star.
Betelgeuse is approximately 640 light-years away from the sun.