[Born to Conserve]

Before a city killing asteroid can kill a city, it has to hit it. In all of written history there have been a couple such asteroids, and they missed the cities.

Yawn.

I’m waiting for the planet killer.

[COBOL2Java]

Before a city killing asteroid can kill a city, it has to hit it. In all of written history there have been a couple such asteroids, and they missed the cities.

It's perfecting its aim. Not easy to hit a moving target from such a distance!

[SunkenCiv]

http://www.freerepublic.com/focus/fr/601395/posts?page=77#77

and the duplicate topic (thanks blam for both):
http://www.freerepublic.com/focus/news/925512/posts

and another old favorite (also from blam):

Did Asteroids And Comets Turn The Tides Of Civilization?
http://www.freerepublic.com/focus/chat/714636/posts

Nasa video shows just how close asteroid will come to hitting Earth
DailyMailUK | UPDATED: 10:11 EST, 8 February 2013
Posted on 2/9/2013 12:15:04 PM by BenLurkin
http://www.freerepublic.com/focus/chat/2986878/posts

http://www.freerepublic.com/tag/bolide/index

http://www.freerepublic.com/tag/impact/index