Betelgeuse has an MV = -5 and 1000 times the radius of the Sun. Barnard's Star has an MV = 13.2 and 100 times smaller than the Sun. Therefore, we can determine that the stars have the same temperature.

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The Answer of Betelgeuse has an MV = -5 and 1000 times the radius of the Sun. Barnard's Star has an MV = 13.2 and 100 times smaller than the Sun. Therefore, we can determine that the stars have the same temperature.

Betelgeuse Has an MV = -5 and 1000 Times the Radius