4 years ago
Earth’s nearest supergiant is cooling down at the end of its life
In late 2019 the red supergiant closest to Earth, Betelgeuse, began to rapidly fade in brightness. Initially thought to be a sign that the star was about to go supernova or that it experienced a dust storm, scientists have now found that it was caused by a gigantic star spot 10% colder than the rest of the star’s surface.
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