A star is reborn: the cloud of dust is accused of the gradation of Betelgeuse Science

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The sudden gradation of one of the Milky Way’s brightest stars, Betelgeuse, could be due to a cloud of dust bursting from its surface, astronomers have said.The mystery has fascinated sky watchers ever since the star – which is part of the constellation Orion – began to lose brightness last October, with some experts suggesting it could herald its supernova explosion.

But researchers working with the Hubble Telescope now have a clearer picture, seeing superhot plasma unleashed from the star’s surface, cooling down in the outer layers of the atmosphere, and eventually turning to dust.

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