The earth.

Earth referred to the world, some say the blue planet, the planet where we lived. It is the third planet from the Sun. It is the fifth largest of the eight planets in the solar system, it’s have the largest diameter among non-gas planets in the Solar System.

Earth is a home to millions of live things including us, Earth is the only place in the universe where we know there is a life. The scientist said that it formed 4.54 billion years ago and life grown since a billion years. Since then, Earth's biosphere has significantly altered the atmosphere and other abiotic conditions on the planet, enabling the proliferation of aerobic organisms as well as the formation of the ozone layer which, together with Earth's magnetic field, blocks harmful radiation, permitting life on land. The physical properties of the Earth, as well as its geological history and orbit, allowed life to persist during this period. The world is expected to continue supporting life for another 1.5 billion years, after which the rising luminosity of the Sun will eliminate the biosphere.

Earth's outer surface is divided into several rigid segments, or tectonic plates, that gradually migrate across the surface over periods of many millions of years. About 71% of the surface is covered with water, the remainder consisting of continents and islands; water necessary for all known life, is not known to exist on any other planet's. Earth's interior remains active, with a thick layer of relatively solid mantle, a liquid outer core that generates a magnetic field, and a solid iron inner core

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Earth interacts with other objects in outer space, including the Sun and the Moon. Earth orbits the Sun once for every roughly 366.26 times it rotates about its axis. This length of time is a year, which is equal to 365.26 days. The Earth's axis of rotation is tilted 23.4° away from the perpendicular to its orbital plane that produce seasonal variations on the planet's surface in a year. Earth's satellite, the Moon, which began orbiting it about 4.53 billion years ago, provides ocean tides, stabilizes the axial tilt and gradually slows the planet's rotation. Between approximately 4.1 and 3.8 billion years ago, asteroid impacts during the Late Heavy Bombardment caused significant changes to the surface environment.

The mineral resources of the planet and the products of the biosphere, contribute resources that are used to support a global human population. The inhabitants are grouped into about 200 independent sovereign states, which interact through diplomacy, travel, trade and military action. Human cultures have developed many views of the planet, including personification as a deity, a belief as flat or being the center of the universe, and a modern perspective of the world as an integrated environment that requires stewardship.