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25 Aug 2017
Kepler explains the emotion of the planets
Galileo is the favour heliocentric model of the unvierse
Isaac Newton explains gravity
William Herschel constructs the first Milky Way galaxy
Ernst Opik demonstrates the Andromeda nebula lies outsides the Milky Way galaxy
Georges Lemaitre propose the Big Bang theory which suggests the unvierse began as a gaint explosion of energy
Edwin Hubble dicovers evidence of an expanding unvierse which supports the Big Bang model.
Neil Armstrong and Buzz Aldrin are the first human beings to walk on the surface o the Moon
Pioneer 10 becomes the first spacecraft to leave the solar system
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