Recently, a large black ring appeared in the sky above Shortandy, a village in Kazakhstan. It hovered for about 15 minutes before gradually dissipating. What was the cause? Aliens? Bigfoot? Miss Cellania? No, nothing so fanciful. According to a physicist, it’s just smoke from a nearby factory. The Independent reports:
However, Andrey Solodovnik, associate physics professor at the Northern Kazakhstan State University, quickly put these rumours to bed saying that the giant hoop was most likely a large smoke ring caused by combustion from a nearby factory.