Tag Archive for 冬の大三角形、


Betelgeuse before and after dimming


(Late last year, amateur and professional astronomers noticed that the red supergiant star Betelgeuse dimming quickly and significantly, with its brightness plummeting by 40 %. Was this getting ready to explode as a supernova? However, new study reported, it turns out dust may be the culprit for building up what are likely false hopes of soon witnessing a massive explosion.)