Black Moon Rising On August 23: Why You Won’t Be Able To See It

A rare celestial event is set to occur this weekend, but you won’t actually see it. A seasonal black moon, which happens roughly once every 33 months, will rise on August 23. While the phenomenon itself will remain invisible, it will give skywatchers a fantastic chance to witness the Dumbbell Nebula (M27), according to Space.com and NPR.