Scaled Model of the Solar System
Object Real Diameter (km) Real Distance (million km) Scaled Size (cm) Scaled Distance (m)
Sun 1,392,000
16.5
Mercury 4880 57.910 0.058 (tiny! grain of sand) 6.9 
Venus 12,104 108.16 0.14 (grain of sand) 12.8 
Earth 12,742 149.6 0.15 (grain of sand) 17.7 
Mars 6780 228.0 0.08 (almost 1 mm) 27.0 
Jupiter 139,822 778.4 1.7 (a dime) 92.3 
Saturn 116,464 1,427.0 1.4 (a button) 169.
Uranus 50,724 2,869.6 0.6 (button snap) 340.
Neptune 49,248 4,496.6 0.6 (button snap) 533.
Pluto 2274 5,913.5 0.03 (small piece of dust) 701. 
Oort Cloud
11,200,000
1,300,000 (1,328 km)
Proxima Centauri
375,840 40,493,000 4.5 (handball) 4,800,000 (4,803 km)
Milky Way
1 x 1018

1. x 1013


(adapted from from astronomynotes.com by Nick Strobel)