Definition: The third planet of our solar system. The home of humans and thus the focus of study for geographers.
Circumference at the equator: 24,901.46 miles
Circumference at the poles: 24,855.34 miles
Average diameter of the earth: 7917.52 miles
Average distance to the sun: 93,020,000 miles
Average distance to the moon: 238,857 miles
Total area of the earth: 197,000,000 square miles
Also Known As: Gaia, Terra
Examples: Typically, the word earth is written in lower case, even though it is a proper place name. Strange, huh?
