Observations by NASA’s Hubble Space Telescope are showing that the unexpected dimming of the supergiant star Betelgeuse was most likely caused by an immense amount of hot material ejected into space, forming a dust cloud that blocked starlight coming from Betelgeuse’s surface.
Click here for original story, Hubble Finds That Betelgeuse’s Mysterious Dimming Is Due to a Traumatic Outburst
Source: NASA Goddard Center