Wilbert Smith Archives Files Box 1131 03 1131-03-p016

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Se atnER EEE EEEEEERROEERRenmenmttiaemeettA oe According to Burnham's Celestial Handbook (29), Betelgeuse, also known as Betelgeux, is a magnitude 0.70 variable red giant in the constellation of Orion, which is the brightest of the constellations and is visible from every inhabited part of the earth. More specifically, Betelgeuse is an irregularly-pulsating red supergiant. Studies using a spectroscope reveal that the diameter of the star may vary by about 60% during the cycle, a difference...