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 Hello, my name is Aoife. This is my blog on the geography of the cosmos.






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The Big Bang:  Today I am going to be talking about the Big Bang theory. The beginning of the universe and itself.  Around 14 billion years ago the universe began.Everything is created by the matter matter created in the first fractions of a second of the big bang. According to the research of Stephen Hawking's, the universe began a s a singularity and therefore It was extremely dense, very small and incredibly hot. This is known as the Big Bang theory. A few fractions of a second after this initial beginning protons, neutrons and electrons started to form causing the expansion of space itself.  Before even a second had passed it went from being smaller than an electron itself to nearly the size of the universe today. The big bang would have been blinding. it would have emitted a huge amount of light due to the density and heat being produced.  Scientists believe that the big bang did happen, if so then we know that the universe began throug...
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 How did the planets and the stars form? Stars and planets form within dense clouds of dust and gas known as nebula. http://2.bp.blogspot.com/   The formation happens in the nebula. Gravity forces the dust and gas to bounce at high speeds into each other. This causes molecules of gas to fuse together through nuclear fusion thus creating hydrogen gas. The hydrogen then creates helium, then carbon, oxygen, calcium and iron. The energy released when the gases fuses generates heat.
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 How stars die: https://futurism.com/ As stars grow they produce more and more heat. The hotter the star becomes, the heavier the elements t creates.iron is created during the life of a star but it is the heaviest element a star can create without dying. Iron doesn't emit enough heat energy against the force of gravity like the other elements do when they react and fuse. This forces the start of the core of the star collapsing. As the nuclear fusion reacts at the core of the star, the star generates more energy while also creating more and more iron. The iron applies great amounts of gravitational pressure to the core of the star. Over perhaps billions of years the star's core eventually collapses. In larger stars this causes a massive explosion of the star itself.  This explosion is known as a supernova. The supernova produces so much heat that the heavier elements like gold form. All of these elements are spread across the cosmos. The star collapses and destroys...
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