👉 Entocone is a term used in astrophysics to describe an object that appears as a ring-shaped region of light. It was first observed by the astronomer Johannes Kepler in 1609, and it has been named after him. The etocone is composed of two separate rings, each consisting of a bright star or other celestial object surrounded by a much fainter ring of dust. This phenomenon is thought to be caused by the gravitational pull between the stars that forms the ring
