Classified in Geology

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Galileos stated in the 17 century that the earth is a planet in constant movement Earths movement and the movements were two. Rotation the earth spins on an imaginary axis that passes through is center From north pole to south and it takes one day.

Revolution the earth revolvesaround the sun in 365 days. 
When the earths orbit the sun the esrtah has 4 stages winter summer spring and autumn. Summer stage called the aphelion the stage that the sun is further of the earth and paraphelion the stage of winter wich is the most closer to the earth.

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