The Third Planet From The Earth

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Earth is the third planet from the sun and the densest planet in our Milky Way Galaxie. Earth has a radius of 3,959 miles and the age of 4.54 billion years. The distance from the earth to the sun has shown to be approximately 92,960,000 miles. The Earth is divided into several layers which have a variety of chemical and seismic properties (depths in km):
0-40 Crust
40-400 Upper mantle
400-650 Transition region
650-2700 Lower mantle
2700-2890 D" layer
2890-5150 Outer core
5150-6378 Inner Core The crust varies in thickness throughout earth. It is thinner under oceans and usually thicker under continents. The inner core and crust are solid while the outer core and mantle layers are semi-fluid. The core is probably composed mostly of iron. Temperatures
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Gravity collapsed the matter, forming the sun in the center of the nebula. As the sun came to be, the rest of the material began to clump up and small particles came together and became into bigger and better particles. Solar wind took light elements such as hydrogen and helium, and only left rocky materials such as earth. The solar winds led the rest of the materials to become into gas giants. This also led to asteroids, comets, planets, and moons to be created. Earths rocky core was made first with dense elements binded together. As dense material went to the middle, the lighter material was then made into the crust. Eventually, earths magnetic field was made and gravity took light elements. As Earth was evolving, earth was impacted by a large mass that made pieces of the planets mantle go into space. Gravity made it possible for these pieces to form the moon. The mantle under the crust caused plate tectonics and the movement of the large plates on the surface of earth. Such impacts and a lot of friction made mountains and volcanoes possible, which then began to throw gasses into the atmosphere. The planet was in a state where liquid water neither freezes nor evaporates but can remain as a liquid, the water remained at the surface, which was the key role in the development of life. According to a new theory, disk instability, clumps of dust and gas collided together early in life. Over…show more content…
These planets can be made rapidly, sometimes in as much as a thousand years, which allowed them to trap lighter gases. They also quickly reached a stabilizing mass that keep them from going into the sun. Disk instability describes the process by which a massive disk rapidly cools and making it planet sized. This requires no direct interactions

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