Ok I get it; 12/21/2012 the planets will align and cause the planetary sleeves which is sort of like a cylindrical layer of a planet and inside the cylindrical layer is the center of gravity, will collide with each other resulting in the peak of an 11 year cycle called solar maximum, which is the peak of solar activity when the sun sort of belches solar flares which could be described as radiation and strong electrical currents. Anyways these radiation and strong electrical currents shoot outwards into space and most of the times are bounced back into the sun. But sometimes the sun lets off a type of super flare which shoots out like a bullet and can hit planets. If small flares was to hit the planet it could cause large blackouts and it also can affect our moods and health, but if a large flare was to hit the earth it would be a global disaster resulting in death to anything it touched. This is just the beginning of what will be happening in space on 12/21/2012, also our planet will be moving from the top of the Milky Way to the bottom of the Milky Way which means we will be intersecting with the galactic equator and while our planet is doing this we will be aligned with the center of our galaxy where there is maximum mass, which will result in further imbalance making the solar flares possibly the worst that our planet has ever seen, and somehow the Mayans knew this! So I guess I can say they Mayan prophecy is really overlooked, it has nothing to do with a comet. this is just a small summary so some of the terms and may not be completely correct, but u can do your own research and try to sum it up in easier terms.