ALMA Observatory Detects Persistent Hotspots on Betelgeuse's Surface
Astronomers using the ALMA (Atacama Large Millimeter/submillimeter Array) observatory have identified long-lived hotspots on the surface of Betelgeuse, a red supergiant star. The findings shed new light on the turbulent, convective nature of the star's outer layers. Betelgeuse, one of the largest and most luminous stars visible to the naked eye, has long been studied for its unusual surface activity and brightness fluctuations. The ALMA observations provide a more detailed picture of how heat and energy move through the star's bubbling surface over extended periods.
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