Okay, so did the scientist know of the meteorite over Russia? Nope. No, they did not.
Here we are looking at DA14 2012, in one direction - and a 50 meter wide causes shock-wave and destruction in the other direction.
Obviously, the 'world' needs to see these galaxy rocks at night, but especially during the day. Get on it peeps, or kiss humanity good-bye.
But my bottom-line is that there are no coincidences, only the appearance of such. The 'Universe' wanted us, the world, to get an up-close-an-personal look at what She is capable of.
A wink-and-a-nod, so to speak.