http://en.wikipedia.org/wiki/2012#20...speculation s
John Major Jenkins, and others [14] claim that an alignment will occur when the sun rises above the horizon on December 21 2012, at which point the sun will rise in the middle of the Milky Way Galaxy, thus causing an alignment between the earth, sun, and the galactic center.[15] This event is said to cause numerous earth changes, however that is not possible considering that the event is only a visual phenomenon from the earths perspective, which is caused by the precession of the equinoxes or the 26,000 year wobble of the earth, which only changes our perspective, not the actual position of the earth in relation to the galaxy. In short, there is no gravitational force or radiation to be expected from this event because other than the tilt of the earth, nothing will be any different than any other solstice.