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The Universe started 13.7 bilions years ago. There are a lot of theories of how it all began, but the most accepted one is the theory of the Big Bang.
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Aristotle was the first person who theorized it.
(*The date is 400 BC). -
Ptomolomeo found the path of the planets and their velocity.
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Nicolaus Copernicus said that the centre of the Universe was not the Earth but the Sun.
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Kepler hypothesized that planets moved in ellipses.
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Galileo Galilei was who verified Kepler's and Copernicus' hypothesis with his invention, the telescope.
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Newton explained how everything moved .
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Simultaneity - Albert Einstein and the Theory of Relativity
Einstein published it on 1905. It explored the link between space and time. -
Is the actual theory about the origin of the Universe.
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Lemaitre said that the Universe wasn’t static and was actually expanding.
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Hubble revealed our Sun as one star amount millions in the Milky Way galaxy.
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Fred Hoyle theoryzed the Steady state theory. He said that the universe had always existed, that it has no beginning and no end, just as steady state.
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The Big Rip sais that everything is progressively destroyed by the expansion of the universe at a certain time in the future.
The Big Crunch is one of the scenarios predicted by scientists in which the Universe may end.
