We not only need to train people, we also need to develop deflection technologies.

It is not enough to do a desktop exercise of a Beethoven symphony. You need to practice with an orchestra. The musicians need to read the notes. Otherwise it will be a disaster.

Anytime we can save lives or prevent the destruction of property, we should do it.

While we didn't know the dinosaurs personally, we do know that they were wiped out by an asteroid impact.

Asteroids have hit the Earth millions of times. We can see them as shooting stars every night. When they get bigger, things get complicated. It is only a matter of time until a big one hits us. And since we can do something about it, we should.

An asteroid can literally destroy 80 or 90 percent of the species that are alive on Earth. These are big events. I mean, this is called extinction.

It would take an extremely large spacecraft to deflect a large asteroid that would be headed directly for the Earth.