- with a dot from a sharpened pencil point as the sun
- all planets, our solar system, would be inside a circle with a 7′ diameter
- Mercury = .4″ radius
- Venus = .7″ radius
- Earth = 1″ radius
- Mars = 1.6″ radius
- Jupiter = 5.2″ radius
- Saturn = 9.5″ radius
- Uranus = 19.2″ radius
- Neptune = 30″ radius
- Pluto = 39.5″ radius
- the closest star to our solar system, Alpha Centauri (which is about the size of our sun), would be 4.5 miles away
