You're seeing the very first, absolutely identified comet particle that has ever been seen.

We're seeing a variety of things that we know absolutely come from a comet.

We're confident that the things coming out [of Comet Wild 2] are the same as those that went in. We believe that we collected the most pristine samples of a comet, those that have never been warmed.

About 10 per cent of this comet is made of organic materials. We don't know exactly what they all are but it is very exciting.

We are confident [the comet] was made out of the initial building blocks of our solar system.

We visited a comet, grabbed a piece of it, and landed here this morning. It was a real thrill.