What will happen on December 21 2012?
Quick answer: Nobody knows, but probably not much.
There have been a lot going on regarding the 2012 prophecy recently, including the movie “I am legend”, but  surprisingly, not much information about what is really supposed to happen on that date is available. This is Probably because nobody knows and also because probably not much will happen. Most information available about 2012 is making reference to mass destruction of the world as we know it, earth’s pole shift/magnetic field reversal, Nostradamus predictions, end of Mayas calendar, etc.
The base of all the predictions is the end of the Maya calendar in 2012, which is supposed to mean the end of the world or a period of radical changes. In fact, the end of the Maya calendar is known as the end of the Great Cycle. People find it easy to believe in that theory because Maya civilization is known for advanced writing, mathematics and astronomy. It can seem like they really know what they’re talking about, but the truth is that the end of the Great Cycle is not the end of the world, it’s in fact a great celebration for the Mayas:



Putting apart scientific data, here are the commons beliefs of the December 21 2012:
Galactic Alignment. This Galactic Alignment occurs only once every 26,000, this is considered as the end-date in the Mayans Long Count calender. It is the alignment of the December solstice sun with the Galactic equator.
A comet hitting Earth (Nostradamus)
Earth’s Pole Shift/Magnetic field reversal
Read my article on pole shift to discover the real truth about 2012 and pole shift: What is that pole shift thing and What is that pole shift thing part II
Increase of calamities, natural disasters, mass destruction, etc.



The only rational “2012 End of world” possibility is actually pole shifting. A Pole shift is a rare phenomenon and is characterized by the north and the south poles swapping places. Such reversals, recorded in the magnetism of ancient rocks, are unpredictable. They come at irregular intervals averaging about 300,000 years; the last one was 780,000 years ago.



Data taken from http://www.dailycommonsense.com/2012-explained-why-it-shouldnt-be-feared/


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