I don't want one that big to hit Earth. Probably just one that is about 50 to 100 foot across. All the recent asteroids that have exploded in the atmosphere have been pretty interesting. The most recent one was about 6 feet across and exploded in the atmosphere over South Africa.

It was traveling 35,000 miles / hour and actually was discovered here in Tucson, Arizona where I live at the Catalina Sky Obervatory on Mt. Bigelow which you can see when you go up the Catalina Highway up Mt. Lemmon. It is positioned at an altitude of 8,200 feet and the other observatory on top of Mt. Lemmon is at 9,100 feet. They detected it a couple of hours before it exploded in the atmosphere. It would be extremely hard to detect something that small.

Why Do I Want A Bigger One To Hit?

If a bigger one hits the desert then it would be good to study the impact and also make the situation more real that we need to focus even more on being able to stop a large asteroid if it is going to hit Earth. Right now even if we detected a large one months in advance we probably couldn't stop it.

This is meteor crater here in Arizona.

It is a small cautionary tale of what can happen when one of these rocks smashes into Earth. It is 2.4 miles in circumference and more than 550 feet deep and is thought to have been the equivalent of 20 million tons of TNT. It happened an approximate 50,000 years ago and was thought to have weighed several hundred thousand tons. That sounds pretty big.

http://meteorcrater.com/

Seems like a long time ago so it doesn't seem to be as real of a danger today. But if a small one smacked down real hard and smashed into the desert that would be like, "Oh Shit! What if that hit a city!" Maybe it can take out an NSA spy satalite on it's way down too!

It is only a matter of time before a giant one ends up lined up with a collision course with us. I don't know if we will still be alive then or not.