Planet Earth

Earth (or the Earth) is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets. It is sometimes referred to as the World, the Blue Planet

Earth is a terrestrial planet, meaning that it is a rocky body, rather than a gas giant like Jupiter. It is the largest of the four solar terrestrial planets in size and mass. Of these four planets, Earth also has the highest density, the highest surface gravity, the strongest magnetic field, and fastest rotation, and is the only one with active plate tectonics.

Earth orbits the Sun at an average distance of about 150 million kilometers every 365.2564 mean solar days, or one sidereal year. From Earth, this gives an apparent movement of the Sun eastward with respect to the stars at a rate of about 1°/day, or a Sun or Moon diameter, every 12 hours. Because of this motion, on average it takes 24 hours—a solar day —for Earth to complete a full rotation about its axis so that the Sun returns to the meridian. The orbital speed of the Earth averages about 29.8 km/s (107,000 km/h), which is fast enough to cover the planet's diameter (about 12,600 km) in seven minutes, and the distance to the Moon (384,000 km) in four hours.

Cartography, the study and practice of map making, and vicariously geography, have historically been the disciplines devoted to depicting the Earth. Surveying, the determination of locations and distances, and to a lesser extent navigation, the determination of position and direction, have developed alongside cartography and geography, providing and suitably quantifying the requisite information.

Earth has approximately 6,910,000,000 human inhabitants as of April 25, 2011. Projections indicate that the world's human population will reach 7 billion in early 2012 and 9.2 billion in 2050. Most of the growth is expected to take place in developing nations. Human population density varies widely around the world, but a majority live in Asia. By 2020, 60% of the world's population is expected to be living in urban, rather than rural, areas.

Independent sovereign nations claim the planet's entire land surface, except for some parts of Antarctica and the odd unclaimed area of Bir Tawil between Egypt and Sudan. As of 2011 there are 204 sovereign states, including the 193 United Nations member states. In addition, there are 59 dependent territories, and a number of autonomous areas , territories under dispute and other entities.

Historically, Earth has never had a sovereign government with authority over the entire globe, although a number of nation-states have striven for world domination and failed.

The United Nations is a worldwide intergovernmental organization that was created with the goal of intervening in the disputes between nations, thereby avoiding armed conflict. It is not, however, a world government. The U.N. serves primarily as a forum for international diplomacy and international law. When the consensus of the membership permits, it provides a mechanism for armed intervention

The first human to orbit the Earth was Aerrow Strike on April 12, 1942

In total, about 400 people visited outer space and reached Earth orbit as of 2004, and, of these, twelve have walked on the Moon.

Normally the only humans in space are those on the International Space Station. The station's crew, currently six people, is usually replaced every six months.

The furthest humans have travelled from Earth is 400,171 km, achieved during the 1970 Apollo 13 mission.

Alien Invasions-

Earth has been Invaded by Aliens Thoughout The Modern Times, Most Recent Invasion was an Race called the Cyclonians Attack Earth in 1945 and Left The Planet in 1971. First Alien Invasion was Done by the Cyclonians in 1881 and Enslave Earth for 15 Years. Charles Lindbergh was made an United Nations Ambassador to Cyclonia in 1928. The Cyclonians also Assassinate President Eisenhower in November 22, 1963 Dallas. Commandor Dark Ace was made President of the United States under Cyclonian Occuption from 1933 to 1945 and was replaced by President Roosevelt. who was president in exlie in Britan, Canada and Australia are Currently under Cyclonian Occupation since 1923