Definition: Polariscopia is a term used in the context of astronomy to describe an object that appears to be rotating around its axis. This rotation can be caused by the presence of other objects, such as planets or stars, which are not directly visible to the naked eye but are still moving relative to the observer. For example, if we were to look at a planet from the perspective of an observer who is looking at the object in question, it would appear to be rotating around its axis.