Betelgeuse is obscured by a massive cloud of dust. Hubble helped solve the mystery
Recent observations from the Hubble Space Telescope indicate that the unexpected decrease in Betelgeuse’s brightness was most likely caused by the enormous amount of hot material expelled into space, forming a dust cloud that obscured some of the light emitted from the star’s surface. Betelgeuse – the giant star Betelgeuse is an aging red supergiant that has grown significantly in size as its interior changes. Currently, the star is so large that if placed in the solar system at the place of the sun, its outer surface would be behind Jupiter’s orbit. The unexpected decline in Betelgeuse’s brightness , noticeable even with the naked eye over time, began in October 2019. In mid-February 2020, the star’s brightness dropped more than three times. This sudden dimming surprised astronomers, who immediately began creating theories that could explain such a sharp change. Thanks to the latest observations by Hubble, the researchers concluded that after a large amount of super-hot plasma wa...