👉 In astronomy, a "grume" is an object that appears as a point of emission or reflection. It can be defined as a small, visible object in space that seems to emit light. Grumes are often associated with stars and other celestial objects, but they can also refer to any object that is not directly visible from the Earth's perspective. Grumes appear due to their proximity to the observer, which causes an optical effect where the light is scattered or refracted at a specific angle.