Definition: Cosmologygy is a term that originated from the concept of "cosmos," which refers to our understanding and study of the natural world around us. It can be used as a humorous word that describes a situation where someone thinks they are in charge of all the scientific knowledge, but ends up being completely uneducated.
One example sentence could be: "I just watched an incredible cosmos gy show on Netflix where a guy claimed to know everything about it and he had no idea what he was doing."