How a dying star is similar to a lava lamp
Astronomers captured bubbling cells of gas 75 times as wide as the sun in this red giant star
A time series of images of the star R Doradus shows bubbles of gas rising and sinking. The images were taken in 2023 with the ALMA telescope in Chile on July 18 (left), July 27 (center) and August 2 (right). The giant bubbles appear as bright and dark spots on the star’s surface and indicate convection inside the star.
ALMA (ESO, NAOJ, NRAO), W. Vlemmings et al.