This year sure seems like a lot of close calls with asteroids and then low and behold the many meteor's and fireballs we have seen all over the world. Here is the latest one from Argentina from a couple days ago.
Edward
http://www.youtube.com/watch?v=nTdbROLB5pQ
Nice video Edward!
Goes to show you that most Meteors/Asteroids get 'zapped' in the atmosphere (By an 'Electrical' Process) before they impact and do any damage.
The Earth seems to have a 'Natural Defence' against these invaders.
Makes all the 'Doom and Gloom': "Oh! It's the end of civilisation freaks, runs for cover!