bill ochs told us that if something does get stuck, there is an emergency plan. >> ochs: we've developedt "the shimmy." we do a little shake on the telescope, and we can rock it back and forth. if that doesn't work, we have another one we call "the twirl," which can actually spin the telescope either clockwise or counterclockwise, to help shake things loose. >> pelley: so, you're going to do what i do with devices when they're not working-- you're going to shake it. >> ochs: yeah, yeah, kind of do the same thing, yes. >> pelley: if 107 pins release, the mirrors synchronize, and 10,000 things go right, webb will be limited only by about ten years of fuel for pivoting and pointing. canada contributed the aiming system that will guide webb to wonders far and near. more than 1,000 astronomers around the world are competing for telescope time. heidi hammel was granted 100 hours. >> heidi hammel: i have so many questions. my particular focus is objects in our solar system. >> pelley: hammel told us that light is full of information. webb can define the chemistry of a place by analyzing its wav