Donald E. Brownlee
We've undergone a very heavy level of scrutiny by review boards because of Genesis and because of the Columbia accident. . . . It was a cultural shift in NASA, that you're now required to understand all the risks.Collection: Risk
There's almost no gravity at the surface. If you were standing on [the surface], you could jump into orbit.Collection: Orbit
So far, as far as we know comet Wild 2 is a unique object.Collection: Unique