out of the blue...er, black
An asteroid described as roughly the size of a soccer field zoomed by Earth at about one-third the distance to the Moon, according to astronomers. The rock, which travels at about 6 miles per second, was not detected until days after it had passed the Earth, which means that if it'd hit, it would have been without any warning at all. "It's a good thing it missed the Earth, because we never saw it coming," Steve Maran of the American Astronomical Society said in the story.
According to reports, the impact of an asteroid that big would have been destructive--perhaps massively so--but not cataclysmic. So what the heck is the graphic of a monster asteroid blasting the Earth doing at the top of CNN's story? That stikes me as overly sensationalistic.
Astronomers estimate a one in 100,000 chance the asteroid, designated 2002MN, could hit the Earth in 2061.
Update: I just had a scary thought...given the tension in South Asia (which seems to be cooling lately) and elsewhere, it'd be truly scary if the asteroid had hit. Despite what movies show you, it's incredibly unlikely that a meteor would hit any major population center, but if it did, it might be interpreted as an attack.