👉 Circumdenudation is a phenomenon in which a body, such as a planet or moon, appears to be surrounded by an invisible layer of material that obscures its view. This obscuring material is often called a "circuit" or "circumsolar zone". The term comes from the Greek words "circular" and "denudation", meaning that the material covering the body is denser than the surrounding atmosphere, which explains why it appears to be surrounded by a ring