👉 In astronomy, the milli- is a unit of angular measurement used to describe the angle subtended by an object at the center of its primary star. It is denoted by the symbol "radian" and has been historically associated with the size of the sun due to its size being roughly 100 million times larger than the Earth's radius. The milliradian is a unit of angular measurement, which is defined as the angle subtended at the center of a point on an
