What caused the great attenuation of the red giant was a veil of dust and smoke. The experts of the European Southern Telescope (Eso) tell us about it with images
ESO scientists give us an extraordinary view of the red giant Betelgeuse, the second brightest star in the Orion constellation as well as an object that in recent years has created more than a few headaches for experts due to its mysterious loss of brightness, in particular between the end of 2019 and the beginning of 2020. It is an animation built thanks to the data of the surveys on its surface activity, which revealed (thanks mainly to the Very Large Telescope of Atacama) the presence of enormous gas bubbles in movement. And not only.
As the hypothetical camera moves, we see a counter of thick smoke mixed with dust: material that has all the air, have recently explained scientists on the pages of Nature, of having formed on the star, and which most likely acted as a veil until it partially cooled the surface.
(Credit video: Eso/L. Sidewalk)