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Copernicus whike studying Mars he discovered that Aristharchus's theory that the planets orbit the sun was right.
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While in Cassiopeia Tycho Brahe sees a Supernova.
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Galielo counted the swings of a lamp and found out that the swing of a pendelum was based on the length of the swing.
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The spectle maker Hans Lippershey applies for license to be able to make telescopes.He is denied the license afterwards
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Galileo made his own telescope based on Hans lippershey's desgin.He showed the telescope to the senate of Venice and talked about the military uses of this telescope.
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Galileo publishes his book The Starry Messenger,He wrote everything he had observed in the book.As he and his book grew famous the Church became mad.The Church said his book was going against the Church's belief.
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Galileo is put on trial and is put on house arrest for life,because of his Dialogue Concerning the Two Chief World Systems.
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While looking at Jupiter Robert Hooke was the first to see the red spot on Jupiter.
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Giuseppi Piazzi observes Ceres which was actually an asteroid.So Giuseppi actually discovered the first asteroid.
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The astronomer Clyde W. Tombaugh discovers Pluto at the age of 24.
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The USSR launches it's small metal sphere into space.This causes commotion between the bigger countries and begins a comptetition to see who could get to Space first.
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The first American to be launched into space was Alan B. Shepard.He was only in space for about 15 minutes.
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Neil Armstrong and Edwin "Buzz" Aldrin, jr succesfully become the first two humans on the MoonThey collect Moon rocks and place an American flag on the surface of the Moon.
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The space probe Voyager 1 snaps the first photo of Jupiter.