what were the exact predictions/quotes of Nostradamus about the world ending in 2012 and obama

how did ppl come up with the fact that the world will end because it will be hit by a comet? does it say that in the prophecy?


isn't there a prediction of an unexpected leader or something like that? and is this the one that everyone is relating to obama? if so why?



and another thing what are your thoughts on the fact that ppl are saying that it will be obama who will somehow end the world? and ppl think its so weird that the "destruction" of the earth will be between the years 2009 and 2012 which is that first term of obama? why does obama have anything to do with it?