Modern astronomers has proved to be the ancient Maya predicted in 2012 on 21 December,the Earth,the Sun and the Galactic Centre will precisely in a straight line,the astronomical events only every other year 25800 occurs only once,no one knows this unusual arrangement on earth can,but the Mayan people know this is terrible.When the solar system across the Galaxy,silver pavement of the magnetic flow with the contrary may be contributing to the Earth's magnetic poles upside down.There is a theory of geophysics and the Maya predicts phenomenon is very similar,this phenomenon is called ” “ the ends of the conversion.The entire mantle will in a few days or a few hours after conversion,the location of the Earth's polar changed,resulting in a global disaster.If every continent will be an earthquake,giant tsunami raging in coastal cities,will eventually evolve into planetary catastrophe.This theory does not appear to be supported by scientists,Einstein in 1955 in respect of the first,plus the Prince University new research results suggest that,before the Earth in the conversion.The Arctic in the 800 million years ago the Pacific Centre,and Alaska is at the equator.Within a few years in spite of the ends of the Earth's conversion is very slow,but may lead to global climate change and sea-level changes.If the ends of the transition very quickly,that means worldwide catastrophe,as well as a large number of species.