Earth

92.96 million mi. size 3,959 mi.At the center of the Earth is the core,which has two parts.The solid, inner core of iron has radius about 760 miles (about 1,220 km).It is surrounded by a liquid, outer core composed of a nickel-iron alloy.Earth has one moon and a ring of debris.One the one hand,the planet has a sidereal rotation period of 17 hours 14 minutes and 24 seconds, which is the equivalent of 0.71833 Earth days. So you could say a day on Uranus lasts almost as long as a day on Earth.Comets shed du