First, the realignment of the Earth, Sun, and the Milky Way Universe on Dec 21 2012. In the subsequent 5 years the Earth, Sun, and the middle of the Milky Way Universe will realign after 26,000 years. This realignment will have some effect on Earth, but to what extent scientists can't establish. There's no written history of events that occurred 26,000 years back to confirm how extensive the outcome will be. The sole archeological find that scientists can use is the Mayan calendar, but the Mayan civilization wasn't even in existence 26,000 ago so the accuracy of the calendar has not been determined. So be wary of what you listen to over the web, most of what you hear and see is only used to scare people. The facts are only this, the realignment of the big three and that civilization will continue to be since we are still hear from the last alignment.
30th 1983, astronomers found a new planet using the IRUS telescope. This planet is roughly the size of Juniper, has a particularly long orbit, and only shows itself each 3,500 to 3,600 years. This so called 10th Planet isn't speculated nor has NASA analyst and astronomers around the globe failed to confirm its existence. This planet is confirmed and is of great concern to the presidencies around the world. It'll have some impact on Earth and our existence but will not wipe out the human race. We are still here from the last time and we will be here the subsequent time.