Mass & radius of planets, moons, low mass stars

Mass and radius are two of the most fundamental properties of an astronomical object. Increasingly, new planet discoveries are being announced with a measurement of one of these...质量与半径是天体最基础的两项核心属性。目前，越来越多的新行星发现成果在对外公布时，均附带了这两项属性中其中一项的测量数据……