The Earth is the third planet from the Sun and the sixth largest planet in the solar system. It is not a perfect sphere, with its equator circumference being about 24,901.55 miles wide and the north pole dilated by 10 meters. The Earth has layers including the crust, mantle, inner core, and outer core, and it rotates on its axis once every 23 hours, 56 minutes and 4.1 seconds while orbiting the Sun at a speed of 106,000km per hour in its circumference of approximately 938,900,000km.