In this 3D solar system size comparison model, the radius of each planet is measured relative to Earth's radius (6,378 km). This means that the Earth's sphere in the model has a radius of 1 cm, where 1 cm represents 6,378 km. For example, the sphere representing Jupiter has a radius of 10.961 cm, and its actual radius can be calculated using the formula: Sphere Radius* 6,378 = Actual Radius of the Planet The data used in this model was sourced from Google. While the model provides a useful size comparison, it is not 100% accurate because planets have different radii at the poles and the equator. However, it still serves as a good reference for understanding relative sizes. The Sun’s radius can also be calculated using the same formula. However, the Sun does not have a single, fixed radius, as different wavelengths of light reveal slightly different measurements. In this 3D model, the Sun’s radius was determined based on visible light observations. I hope you like this model!