Our Island Universe: Has Betelgeuse Exploded?!

Jan 22, 2020

Credit earthsky.org

Betelgeuse, the bright orange/red star in the armpit of Orion the Hunter, is going to explode any time now. Betelgeuse this winter is only half as bright as it was last winter. Has it already exploded? What does that mean for us here on Earth? #OurIslandUniverse

Betelgeuse image caption: Brian Ottum kindly provided this direct comparison of Betelgeuse a few years ago and Betelgeuse now. He wrote: “Left is February 2016. Right is December 31, 2019. Note that the brightness/appearance of all background stars are identical left versus right, but Betelgeuse is definitely fainter on the right.”