NASA: Chances of 'city-killer' asteroid hitting Earth have increased

"'The difference between 1.2 percent and 1.3 percent doesn't matter,' he said. 'Until the data

are sufficient to pinpoint which of these two final answers is correct, we can expect the probability numbers to wobble around a bit. This is simply how scientific data measurements play out,' he added." Astronomers have also calculated a predicted impact zone that stretches from South America across the Atlantic Ocean to sub-Saharan Africa. The asteroid has the potential to cause significant damage, especially if it lands in a densely populated area like a major city due to it being the size of another space rock that hit Earth in 1908 with a blast equivalent to detonating 50 million tons of TNT." MS