So, how big are the planets if the Sun is 18 inches across?
Pluto, the smallest planet, would be about the size of the period at the end of this sentence.
Here are the rest of the planets; their scale sizes and orbits :
|To calculate the planet sizes and orbits for our scale model, we used the handy Solar System Calculator on the Exploratorium web site. You can too! Go to http://www.exploratorium.org/ronh/solar_system/index.html|