Astronomers say they have found Betelgeuse’s small companion: a blue A or B star, hot but not yet on the main sequence, orbiting Betelgeuse at about 4 AU. Believed to be the explanation for the six year dimming cycle, caused as it orbits Betelgeuse.
Astronomers say they have found Betelgeuse’s small companion: a blue A or B star, hot but not yet on the main sequence, orbiting Betelgeuse at about 4 AU. Believed to be the explanation for the six year dimming cycle, caused as it orbits Betelgeuse.