The discussion revolves around the terminology used to describe the outermost point of an object's rotation, contrasting it with the term "Pivot," which refers to the rotational axis. A participant expresses frustration over the lack of answers and suggests that the question is both worthy and complex. They propose that for perfectly round objects, the outermost point can be referred to as the "sphere," while for irregular shapes, terms like "Maximum Diameter" or "Maximum Radius" could be used, although these are not official terms. The conversation also touches on specific terms related to planetary orbits, such as perihelion and aphelion, indicating a desire for a more technical name for the outermost point in general contexts.