Clearly, such a thing would be led by the country that has the greatest technological capability, which is the United States and NASA in particular.

I think there is a host of not just technical problems but legal and political problems.

But about a month ago, there was some news that was more scary than exciting.

Had that occurred 20,000 feet over New York City, other than blowing out windows, what would have happened?

And if that one had exploded over New York at 20,000 feet--what would that have done to Manhattan?

A high-altitude/near-space explosion could have a very catastrophic effect on many of the satellites we rely on for weather, early warning, imagery, and other very critical functions.

We might get a trailer from 'Armageddon' and show that.

Because they have to be right on the ones that we know to make sure we know their trajectory.

If you have less than a few years' notice, right now we have no options.

Like others who have traveled into space, I myself am no stranger to space threats.

And you are going to put up, along with NOAA and the Air Force, Discover in late 2014 for giving us early warning on sun explosions, are you not?