Earth

Earth is the 3rd planet from the sun. It is known as the "Blue Planet" because of it's oceans, streams, lakes, and rivers. Earth is also the largest Terrestrial or Inner Planet in The Solar System.

Overview
Earth is the only planet that supports life and the only planet that was not named after a Greek or Roman Deity. Our beautiful planet formed about 4.5 billion years ago. The Earth has only one Natural Satellite or Moon, that was named "Luna". 70% of Earths center is water and 30% of Earth is ground. Earth is mostly made up of iron, silicon and oxygen. One Earth Day is actually not 24 hours. It actually takes 23 hours, 56 minutes, and 4 seconds to complete one rotation. Earth has 2 co-orbital satellites. There names are 3753 Cruithne and 2002 AA29. Earth is also the most densest planet in the Solar System. This is caused by Earth's metallic core. Earth's metallic core is denser than its crust. The average density of the Earth approximately 5.52 grams per cube centimeter. Earth has a very strong and powerful magnetic field. The cause of it is it's nickel- iron core of the Earth, coupled with its rapid rotation. This effect helps protect the Earth from Solar Wind. It takes Earth about 365 days to orbit and to go around the sun once. 3% of water on the Earth is fresh while 97$ is salted. The Earth tilts at roughly 66 degrees. Each winter their is about 1 septillion ice crystals (1,000,000,000,000,000,000,000,000). The largest continent Asia is covering 30% of the total Earth Land Area, but represents 60% of the worlds population. Earth is actually not round in shape. It is actually geoid.