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Sometime between 13 and 20 billions years ago was an explotion that create the center of the universe
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In Egypt, Mesopotamia it was create the first solar-lunar calendar
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The construction of the first observatory in Cario, Egypt
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Copernicus publishes his heliocentric theory of the Universe.
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The first reflecting telescope was built by Newton.
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The Great Red Spot on Jupiter becomes prominent.
1905 A.D. California -
Albert Aenstein introduce a special relative theory
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Clyde Tombaugh discovers Pluto.
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Karl Jansky discovers radio waves
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the first radio telescope
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first object to orbit the Earth, launched by the Russians.
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Explorer 1 launched. This was the first U.S. satellite to orbit the Earth.
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Discovery of Uranus' rings
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Construction begins on the International Space Station.
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they found water in Mars