Asteroid impacts

Jose, while I don't spend a lot of time worrying about it, asteroids certainly have hit the Earth in the past, and they certainly will hit the Earth again. The town of Wetumpka, Alabama, near Montgomery, sits on the jagged rim of a tremendous ancient impact crater, so old, eroded and forested that it's not as obvious as, say, Meteor Crater in Arizona, but it's there just the same. If you look at any road map of Alabama, you can see the oval shape formed by highways circling around the thing.

Here's a link to Arizona's Meteor Crater.