The Hubble Space Telescope captured data in 2019 that has led astronomers to conclude supergiant star Betelgeuse blew its top, literally. The star lost a large amount of its visible surface and produced a mammoth Surface Mass Ejection (SME).

To put just how massive this explosion was into perspective, our own Sun regularly blasts off parts

Source: Hot Hardware – NASA’s Hubble Spots Supergiant Star Betelgeuse Erupting In A Violent Historic Explosion