The best thing to do is to study these asteroids so we know the range of parameters we would have to deal with and also to find them so we have as much time as possible to prepare.

The basic method to find asteroids hasn't changed much in hundreds of years. So asteroids in a telescope look just like stars with one exception: They move with time.

If I go and buy a coffee, and somebody asks me what I do, I'll say, 'I find asteroids.' And the first thing they always do is make a Bruce Willis joke, or they are going to bring up Armageddon.

NEOCam wouldn't need cryogen, and it would also be able to see entirely new areas of space. It can scan the sky in a new way.

With music, I get to a much darker place. Where I'm able to go with 'Portlandia' has a wider range, but also a brighter range.

I think every time we send a spacecraft to an asteroid or comet, we learn more.