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					Originally Posted by InCoGnEtO  ....so this ISN'T the same meteor that is supposed to buzz the planet today? 2012 DA##? This is a DIFFERENT ONE? How did we not know this was going to happen?
 I WANT ANSWERS!
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Less than 1% of meteors are currently known (read that today in one of the stories). 
 
I know you're joking around, but I thought it was interesting. There is also apparently a large "atomic bomb sized or larger" impact about every 1200 years (the last one being Tunguska in 1908, so hopefully we are fine for a while).
 
Although the same story said that ones equal to Tunguska could have happened more often and news just didn't get around, or the stories were not preserved.