Star+&+Seirra

= Earth

= =__ Describe how the planet got its name :__ All of the planets, except for earth were named after greek and roman gods and godesses.The name earth is an English / German name which simply means "ground". It comes from the old English word "eor(th)e" and ertha. in German it is Erde the earth 's name are at least 100 years old.=

__Who discovered your planet? when? where? how? ;__ N/A

__Distance:__ Order from the sun: 3rd planet away from the sun. Distance from sun: 150 million km ( 93 million miles. ) Distance from Earth : N/A.

__Planet Measurements:__ Mass: 6.0 R Volume: 1,097,509,500.0 R.

__Orbit & Rotation:__ Numbers of days to orbit around the sun: 365.3 Days/ A year Perihelion (how close does it gets to the sun?): 91 million miles

__Epuatorial Circumference:__

Mean Density: 5.5 grams per cubic centimeter Gravity: Yes //Aphelion ( how far does it get from the sun?):// //95 million miles// //Length of day : 24 hours//

//__Planet appearance:__// //Earth is an oblate spheroid, which is like a sphere,// //but is more elliptical coval.It appears mostly blue for oceans. It has green which stands for the continents.White is mostly cloud or snow//

__Rings__ //No Rings//

//__Satellites__// //The most important satellites are Galaxy 14 - 12, KH - 13,Hubble space telescope, and GPS IIR11//

//__Core composition: Surface composition:__// //1.Upper mantle 25% water// //2.Lower mantle 25% air// //3.Outer core 5% organic matter//

__Major gases:__ Nitrogen and Oxygen

__Minor gases:__ carbon dioxide, ozone, argon, and helium

__Surface Condition__ Wind Speed: about 7 mph

Temperature ranges: -126 degrees fahrenheit (- 87.8 degrees celsious)

__Surface pressure:__ Normally 1013.25 hP

__Weather: describe what kind of weather occurs on your planet__ cloudy, misty, rainy, sunny, sleet, snow, tundra,and windy

__Water: what form of water are found on your planet or on any of the moons__ Fresh water and salt water. Fresh water is water without salt and is the home to many species. Salt water is also home to many animals and makes up 97% of the water on earth!

__Exploration:__ N/A

__Habitability:__ __N/A__

__Future human travel:__ __N/A__

__Terraforming:__ __N/A__

__Cool Facts:__ __How much would you weigh on your planet:__ __N/A__ __List 3 neat or interesting facts about your planet:__ 1. The Earth's core is 7,500 degrees hotter than the sun. 2. The only planet not named after a god or goddess. 3. Earth is the 5th largest planet in the solar system.

__References:__ 1

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2.[|http://www.geography4kids.com/files/earth_composition.htm]

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