>> or bruce willis, that's right. i wonder what the measure of success, crkristen is going to to see if one one day is headed towards earth they can deploy this. >> yeah, so we're going to be able to see this live. there is a camera on the spacecraft that will slam into the astroid and just going to go b black. after that it will take a few weeks to find out if it's been a success or not in terms of moving it from the orbit. they have to use telescopes all over the earth. ground based and using the web space telescope to point it at this collision and see if it was successful. if it was able t...