ORIGIN OF THE STORY
The story began with the claims that a planet NIBURU,an alleged planet discovered by Sumerians is channelised towards the earth.This calamity was at first anticipated in may 2003, but when nothing occurred the end of the world date was moved ahead to dec 2012. The last time the world got all aroused over the mysterious turning of a calendar was the assumed Millennium of Jan. 1, 2000. No matter the actual Y2K computer-date bug. True-believer authors (and their copycats) brought out scary and/or hopeful articles about the moment’s prophetical potential to catch an huge cosmic wave and alter everything for either good or ill.

MAYAN CALENDER END IN DEC 2012
Just as calendars on our kitchen walls doesn’t end in dec 31st, the mayan calendar doesn’t cease to end in dec 2012. This date stamp is the close of the Mayan long-count period on the other hand — just as your calendar begins once again on January 1 — another long-count period sets out for the Mayan calendar.

PLANET X
There are no terrestrial alignments in the following few decades, Earth won’t cross the galactic plane in 2012, and even if this conjunctions were to occur, their consequences on the Earth would be negligible. You may have already heard something about planet X . The idea of planet X, and the hunt for the evasive planet, began in the midst of the 19th century after Neptune was discovered, since a lot astronomers believed there was some other planet beyond Neptune’s orbit . When Clyde Tombaugh discovered Pluto in 1930, it was believed to be planet X, affirming the conjectures of Percival Lowell and many other astronomers. However, in 1978, astronomers discovered that Pluto could not be planet X as it was too small to affect the orbits of the gas giants.
This led scientists to conclude that no planet X, at least Percival Lowell’s version, exists.
Well that is where planet X fits in for some. One of the many theories as to how human race will be abolished in 2012 is by planet X barging in Earth . To further elaborate matters, some people who believe in 2012 have also associated planet X as being the same as Nibiru. The Nibiru hypothesis says that an alien race came to Earth thousands of years ago and genetically altered beings into humans so as to serve them. Nibiru is supposed to return in 2012 to cause havoc and destruction is nothing but rubbish.

TRUTH BEHIND POLAR SHIFT THEORY
A reversal in the rotary motion of Earth is out of the question. There are slow movements of the continents, but that is irrelevant to claims of reversal of the rotational magnetic poles. However, many of the calamity websites pull a bait-and-shift to befool people. They claim a relationship between the rotation and the magnetic polarity of Earth, which does change irregularly, with a magnetic reversal happening every 400,000 years on the average. A magnetic reversal is very unlikely to happen in the next few millennia.
Now let’s distinguish between geomagnetic reversal and polar shift. Geomagnetic reversion is the change in the magnetic field of the Earth, where the compass north pole shifts to the South Polar Region and the south magnetic pole shifts to the compass north Polar Region. Once this action is complete, our compasses would point toward Antarctica, instead of northern Canada. Polar shift is considered to be a less likely event that occurs a few times in the evolutionary timescale of the Solar System. Many sources (including the doomsayers themselves) frequently mention both geomagnetic reversal and polar shift as being one of the same thing. This isn’t the case.Though there seems to be a current downward trend in magnetic flux density, the current magnetic field is still regarded as above average when compared with the fluctuations measured in recent history.

SOLAR STORMS PREDICTED FOR 2012
Although a solar flare from out Sun, aimed like a shot at us, could cause secondary troubles such as satellite damage and harm to unprotected cosmonauts and blackouts, the flare itself isn’t powerful enough to ruin Earth. In the far future when the Sun begins to run out of fuel and swell into a red giant, it could be a bad era for life on Earth, but we have a few billion years to wait for that to occur. .
Doomsayers point to the Sun as a imaginable Earth-killer source, but the reality remains that our Sun is a very unchanging star. It does not bear a binary star partner (like II Pegasi), it has a predictable cycle (of around 11 years) .Even if a big flare did hit us, it will not be an extinction event. Yes, satellites may be damaged, causing secondary problems such as a GPS loss (which might disrupt air traffic control for example) or national power grids may be overwhelmed by auroral electrojets, but nothing more extreme than that. Satellites may malfunction and migrating birds may become confused.

One thing still not understood by me is the relation between Planet X ,geomagnetic reversal and the solar flares as every phenomenon having different reasons of its occurence.The theories available in support are a pathetic attempt to link various doomsday scenarios with a common herald of doom.