Earth - Navo

• The Earth, also known as the world, Terra, or Gaia, is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only celestial body known to accommodate life.
• According to evidence from sources such as radiometric dating, the Earth was formed around four and a half billion years ago. Within its first billion years.
• The Earth's lithosphere is divided into several rigid segments, or tectonic plates, that migrate across the surface over periods of many millions of years.
• The layers of the earth are the Lithosphere, Asthenosphere, Mantle, and the core.The core the hottest layer.
• Above the troposphere, the atmosphere is usually divided into the stratosphere, mesosphere, and thermosphere. Each layer has a different lapse rate, defining the rate of change in temperature with height. Beyond these, the exosphere thins out into the magnetosphere, where the geomagnetic fields interact with the solar wind.