Astronomy

Astronomy is the study of the universe outside of Earth's atmosphere.

__//**Astronomy**//__

Astronomy is the study of all of the matter and energy that exists in the universe including its distribution, composition, physical states, movements and evolution. When studying the distibution of matter and energy in the universe astronomers (those who reasearch or study in the field of astronomy) look at the postion of the matter and energy as well as its arangment and the amount of matter and energy in that specified area. When looking at the composition of the matter in the universe, astronomers look at the quantitative, meaning the amount of matter and the qualitative, meaning the quality of the matter of the make up of the universes matter. An example of a quantintative attribute could be the size of a planet or asteroid. An example of qualitative attribute could be the that the earth's atmosphere consists of oxygen, carbon dioxide and nitrogen and argon. In terms of physical states, astronomers look at the state of which them matter is found. The four states that matter is found in are: gas, liquid, solid and plasma. As astronomers study the movement of matter and energy in the universe they look for how different space objects move through out the universe. Two of the main attributes that astronomers look for when studying the movement of something in space is whether it rotates on an axis, and if so how fast and how long it takes for the object to orbit around another much larger object. The fifth and final main part of astronomy is the study of the evolution of the universe. This portion involves the study of the different theories about how the universe began and how it might end, if it ever will. These thories include the Big Bang Theory which states that the universe began from a large explosion billions of years ago and has expanded since then and will never stop expanding as well as the Steady State Theory, which is no longer accepted, Oscillating Universe Theory  stating that the universe began from an explosion like the big bang but will one day have such a strong gravitational pull that it will one day collapse into itself. Out of these theories, the Big Bang theory is the most popular and believed to be true by many people. In conclusion, the study of astronomy is generally the reasearch and study of all energy and matter in the universe and how it interacts by itself and other objects in the great and vast universe.

Refrences: 1.http://www.astronomy.org/astronomy-survival/intro.html 1208284154