A Scale Model of the Earth-Sun System
- Dimensions of the Earth-Sun system
- Radius of the Sun: 7.0 x 105 km
- Radius of the Earth: 6.4 x 103 km
- Separation between Earth and Sun: 1.5 x 108 km
- Make the Sun a sphere with a radius of 20 cm (about the size of a basketball)
- The Sun is 110 times larger than the Earth
- The model Earth should be 1.8 mm in radius (that
is, 110 times smaller than the 20 cm radius basketball which
represents the Sun - about the size of a pea)
- The separation between the Earth and Sun is 210 times
the Sun's radius.
- The model Earth should be 210 x 20 cm = 4200 cm = 42 meters from
the model Sun.
- Jupiter would be the size of a golf ball and would be located 200 meters
from the model Sun
- The next nearest star would be another basketball located in Honolulu.
- A model of the Milky Way Galaxy on this scale would just fit between the real Earth and Sun!
Updated September 2, 2009