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The fist two planets, Mercury, Venus, and the last three Mars, Jupiter and Saturn were discovered by babylonian astronomers.
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1543) the Earth came to be considered a planet revolving with the other planets around the Sun, in the following order of distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, and Saturn.
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Johannes Kepler (1571-1630) who discovered and demonstrated that the Earth orbits the Sun.
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William Herschel first discovered the planet Uranus
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Galle and Le Verrier discovered Neptune
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Clyde Tombaugh discovered Pluto