The End Of The World!!!

i heard about 'the end of the world''? i believe that its true(because scientists say so). They predict that on the year 2012, December 21, how we die there a lot things going to happen on Earth like big meteorites hitting Earth, a big planet about the same size as either our moon or Earth passing us that will cause climate changes. for meteorites, they will crash into Earth like mad especially the asteroid i heard of, its the...... 500 KM ASTEROID!!!!! Are you nuts? do you know how big it is? Even though our atmosphere will either burn parts of the asteroid that it still cannot save us and crash directly onto the ground or the asteroid will just explode in the sky like red shit bursting in the sky spreading everywhere that will kill all of us to the core. No one could survive in this freaky situation......this situation will vanish us into......(i don't know). what should we do!!! while, we should do nothing but pray. now we are just counting on the scientists to plan to stop the end of the world...... ......