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Science Competition Space Timeline This below is my timeline of space it should explain the many theories of how the universe came to be. It should explain about how galaxy was formed and what stage our star; the sun is in at this point in this present moment. The Time Line will take you from the moment it was created to the moment it will die. It will show each step in as much detail as I can find. The Big Bang Theory I am going to start the timeline with the big bang theory as people/scientists believe that it was at this point at which our universe was created The diagram below shows the early stages of the universe after the big bang. I am going to show you step by step how each stage happened and what it meant. The short section of the timeline below shows the short period of time, 300 million years after the big bang. Stage 1 The Big Bang-The universe began with an explosion that generated space and time, as well as all the matter and energy the universe has and will ever hold. For a small fraction of a second, the universe was an infinitely dense, hot fireball. The present theory described a peculiar form of energy that could suddenly push out the fabric of space. On a rare occasion, a process called "Inflation" can cause a vast expansion of space filled with this energy. The inflationary expansion could only be stopped when this energy had transformed into matter and energy as we know it. - Stage 2 Universe Shaped- After inflation, one millionth of a second after the Big Bang, the universe continued to expand but not nearly as quickly as it had done. As it expanded, it became less dense and cooled down. The most basic forces in nature were discovered: first gravity, then the strong forces then the weak followed by the electromagnetic forces. By the first second, the universe was made up of elementary (basic) particles and energy basic elements such as: quarks, electrons, photons, neutrinos and less familiar types. These particles smashed together to form protons and neutrons. Stage 3 Basic Elements Formed- 3 seconds after the universe had shaped Protons and neutrons came together to form the nuclei of simple elements such as: hydrogen, helium and lithium. It took another 300,000 years for electrons to be captured into orbits around those nuclei to form stable atoms.