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建立人际资源圈Black_Hole
2013-11-13 来源: 类别: 更多范文
Black Hole
Within our universe there are millions upon millions of galaxies. Humans have known the existence of stars since they have had eyes. The mystery does not lie within what we can see, but what we cannot see. The theory that black holes have existed is not new at all. All black holes are formed from the gravitational collapse of a star, usually having a great, massive, core. A star is created when huge, gigantic, gas clouds bind together due to attractive forces and form a hot core, combined from all the energy of the two gas clouds. This energy produced is so great when it first collides, that a nuclear reaction occurs and the gases within the star start to burn continuously. The hydrogen gas is usually the first time of gas consumed in a star and then other gas elements such as carbon, oxygen, and helium are consumed. This chain reaction fuels the star for millions or billions of years depending upon the amount of gases there are. The star manages to avoid collapsing at this point because of the equilibrium achieved by it. The gravitational pull from the core of the star is equal to the gravitational pull
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