We saw incredible features -- steep cliffs, overhanging cliffs, spires and many other things we had never seen on other solar system bodies.

We were stunned when we got to the comet and saw incredible features - steep cliffs, overhanging cliffs, spires and many features which, oddly enough, we had never been seen on other Solar System bodies.

We did this mission to collect the most primitive materials we could in the solar system. We went to a comet that formed at the edge of the solar system, far from the sun under very cold conditions. We're confident that it was made out of the initial building blocks of our solar system.

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

We're collecting things that are very ancient and even older than our solar system. We are literally reaching for the stars.

This comet formed at very edge of the solar system ... out by pluto ... and spent all its lifetime out there until recently it came into the inner part of the solar system, where we could sample it.