History of the Universe

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Milankovitch Cycles

This theory predicts that the Earth's climate is influenced by periodic changes in the Earth's orbit round the Sun. For example the Earth wobbles as it spins, like a top which is about to fall over. This "precession" happens once every 26,000 years. The observation of past climate from deep-ocean cores has confirmed this theory, although there are still unexplained variations in climate.

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