Models of planets, comets and the Sun

The solar system consists of the Sun, eight planets and a large number of smaller objects (dwarf planets, asteroids, moons, comets, small bodies and dust particles). Theoretically, the ninth planet, located behind the orbit of Neptune, was predicted, but its existence is not yet proven.Images of the solar system available on the Internet and in the literature are usually in two different scales (one scale is used for the dimensions of bodies, the other one for distances from the Sun). The use of two scales gives the impression of the solar system being vastly populated by mass. But it is a much distorted notion. Unfortunately, this distortion is necessary. If we wanted to draw the solar system completely on one scale so that the drawing would fit on a sheet of A4 paper (distance the Sun – Neptune 30 cm), the Sun’s diameter would be about 0.1 mm and the diameter of the Earth would be invisible of roughly 0.001 mm.