It's impressive and spectacular that so many cameras were recording this incident. Many people got hurt by the shock wave. Please remember, at this time I'm writing this post, not everything is clear. But the "raining stone" news on several sources sounds very dramatic. So far it looks like the main piece felt down in a lake, which scientists are now trying to examine.
|Meteorite (Photo credit: MarkGregory007)|
Such a tiny piece in space simply can't be detected. And it happens a lot, but not over a city, but because the earth surface is 70.8% water, it usually happens over the sea and no one sees it. Yes, this one was big, but we over dramatizing it.
No, it's very unlikely this has something to do with 2012 DA14. If this one hits the earth, I promise you, you will know it, no matter where you are. But this won't happen. And the scientist didn't fail on the Russian meteorite. It was just a stone in space, and this can and will happen many more times. And no sensationalist call for a anti-meteorite warning system in Russia will change that. And destroying such little pieces is something for SciFi movies.
Good source for getting information about this: Bad Astronomy