Betelgeuse Up Close
“Hovering 100 AU from Betelgeuse the red supergiant. The 1000-solar-radii star fills more than half the sky in roiling convection cells the size of solar systems, the surface boils in irregular bright and dark patches, an enormous prominence loops on the limb, gas and dust shed in the foreground as the star prepares for supernova, and the outer atmosphere is cool and red.”
