Betelgeuse is the nearest red supergiant to Earth, an evolved star that is supposed to go supernova sooner rather than later in cosmic terms. Over the last 12 months, Astronomers examining Betelgeuse have been puzzled by its mysterious dimming. The star underwent a dramatic dimming that stopped in February, and after a few months of slowly getting brighter, it has now inexplicably dimmed again. Astronomers report that the star has been dimming again since May. In a series of three observations on June 24, July 13, and July 20, the star has gotten increasingly dimmer. Enough to make them wonder what might be going on.  Betelgeuse is supposed to have a minimum brightness in April 2021, but if the current dimming continues this will happen much earlier.