Discovery suggests red supergiant Betelgeuse was actually yellow 2,000 years ago

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An image of Betelgeuse as seen from the Natural park of Cabo de Gata, Almería, Andalusia, South of Spain. Using historical depictions and descriptions of Betelgeuse throughout the ages, scientists have been able to pinpoint roughly when the supergiant star got its red coloration. The team found that the star, located in the Orion constellation in the Milky Way around 640 light-years from Earth,...

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