Unprecedented details on the surface of the star Betelgeuse

Using interferometry, an international team led by an astronomer of l'Observatoire de Paris obtained an unprecedented image of the surface of the red supergiant Betelgeuse in the constellation Orion. The image reveals the presence of two giant bright spots whose size is equivalent to the Earth-Sun distance — they cover a large fraction of the surface. It is a first strong and direct indication of the presence of the convection phenomenon, transport of heat by moving matter, in a star other than the Sun. This result allows us to better understand the structure and evolution of supergiants.

Full article on Astronomy.com



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