Find a Star's Diameter. Estimate the diameter of the supergiant star Betelgeuse, using its angular diameter of about 0.05 arcsecond and distance of about 600 light-years. Compare your answer to the size of our Sun and the EarthSun distance. | Numerade
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Betelgeuse star Betelgeuse, also called Alpha Orionis, second brightest star in theconstellation Orion, marking the eastern shoulder of the hunter. Its name is derived from the Arabic word bat al-jawzāʾ, which means “the giant’s shoulder.” Betelgeuse is one of the most luminous stars in the night sky. It is a variable star and usually has an apparent magnitudeof about 0.6, but, beginning in late 2019, it began dimming to an apparent magnitude of 1.6 by early 2020. It is easily discernible to eve
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