The Tennis Blog

taking a tennis ball as the scale. How much bigger would the sun be?

In other words a tennis ball is approximately 4 inches (old money) across its diameter, so what would the diameter be if it was the sun…..using the tennis ball as the scale.

If the diameter of the Earth was 4 inches, the diameter of the Sun would be approximately 36 feet and 4 inches.

The diameter of the Sun is 109 times the diameter of the Earth.

http://education.gsfc.nasa.gov/eclipse/pages/SunActiv.html