Un extraño fenómeno asombró a los residentes de la ciudad turca de Bursa cuando una nube circular, similar a un ovni, cubrió el cielo. Source

A massive lenticular cloud resembling a UFO was spotted over the city of Bursa in Turkey on Thursday, surprising citizens who captured the rare phenomenon on their phones. The circular cloud, which appeared at sunrise and featured a large hole in the middle, remained intact for about an hour. ...