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Betelgeuse

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Betelgeuse, also designated Alpha Orionis (α Orionis, abbreviated Alpha Ori, α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion . Distinctly reddish, it is a semiregular variable star whose apparent magnitude varies between 0.0 and 1.3, the widest range of any first-magnitude star . Betelgeuse is one of three stars that make up the Winter Triangle asterism, and it marks the center of the Winter Hexagon . It would be the brightest star in the night sky if the human eye could view all wavelengths of radiation. https://en.wikipedia.org/wiki/Betelgeuse   Portal