Betelgeuse, Up Close: A Star’s Boiling Skin, Revealed
Today's episode — S05E177, Wednesday August 26, 2026:
Feature story: Astronomers using the ALMA array in Chile, led by Bill Dent (European Southern Observatory), have released the most detailed picture yet of the actual surface of Betelgeuse, the red supergiant marking Orion's shoulder — a corrugated, irregular surface with bright convective hot spots, some nearly 1,000°F hotter than the surrounding plasma. One hot spot in the northeastern region has persisted for more than seven years, far longer than current models predict, and its orientation lines up with the position of Betelgeuse B — a…
The skinny
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