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Cloud Essay

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Many cosmologists believe that the universe was created 15 billion years ago with the “big bang” a huge cosmic explosion that lead to an expanding of clouds of the two elements, gases hydrogen and helium. Since there were no other elements at the time anywhere there were dense knots containing higher concentrations of gases, the mutual gravitational attractions of gas molecules led to the birth of the first-generation stars. Over time as more and more material fell into a new star, the pressure at its center finally became adequately large to start the process of nuclear fusion, wherein the nuclei of hydrogen and helium combine to form heavier elements. It was convoyed by the release of energy, which made the star begin to shine and halt …show more content…

Most stars are born within the arms of a spiral galaxy where there is more gas and dust. Sometimes, numerous stars can form within the same molecular cloud, and we have what is identified as a star cluster. There are two types of clusters; Open cluster, which have a tendency to contain a few hundred fairly young, hot stars, that quite spaced out, and globular clusters, that also have about thousands of much older stars, more densely crowded together.
The life of a low-mass star like the sun for example have fusion of protons into helium in the stars center generates heat and pressure that can care the weight of the star. The sun is mainly made of hydrogen (1 proton+ 1 electron) when it was born and it happened to have enough hydrogen to last like this for roughly 15 billion years. When it starts to run out of hydrogen in the center, not enough heat and pressure is generated to balance the weight of the stars, so the core of the star slowly begins to collapse. As the core beings to collapse it gets hotter, however no extra heat has been made because it compresses. It gets so hot that light from the core causes the outer parts of the stars to increase and get less dense, so the star looks cooler from the outside. The star is becoming a red giant. Finally, the core gets so hot that it’s possible for helium to fuse into carbon and oxygen. Extra heat and pressure are once again generated and the core stops collapsing; its

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