They’re not. Earth, for example, sits relatively snug to the sun at an average distance of about 93 million miles. Neptune, however, orbits more than 30 times farther away. The solar system model ...

Earth, for example, will be the size of a tennis ... "The idea is to build a scale model of the solar system in the middle of Lethbridge, and what we're going to be doing is modelling it after ...