The '''Earth''' is the third planet from the Sun. It is 24,800 miles (40,008 kilometers) in diameter, pole to pole and slightly larger around the equator. [http://geography.about.com/library/faq/blqzcircumference.htm] The reason its metric diameter is so close to the "round number" of 40,000 is that the French defined the [[kilometer]] as 1/10,000th the distance from the equator to the [[North Pole]]. | The '''Earth''' is the third planet from the Sun. It is 24,800 miles (40,008 kilometers) in diameter, pole to pole and slightly larger around the equator. [http://geography.about.com/library/faq/blqzcircumference.htm] The reason its metric diameter is so close to the "round number" of 40,000 is that the French defined the [[kilometer]] as 1/10,000th the distance from the equator to the [[North Pole]]. |