👉 Dwarfness is a scientific concept in astronomy that refers to an object being smaller than its own star. It's often used to describe objects within our solar system, which are also known as planets or moons, but it can also refer to other celestial bodies like asteroids and comets. Dwarf planets are those objects orbiting the Sun that are less massive than Earth, and they typically have a radius of about 1-2 AU (astronomical units).