I just can't believe this actually is a piece of a comet, but it is.

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

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.

They were either red-hot or white-hot grains, and yet we collected them in a comet, the Siberia of the solar system.

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.

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