I'd love to go into space again if there were a mission to Mars. I'd also love to go to a completely different planetary system, out of our solar system.

Mars is the only place in the solar system where it's possible for life to become multi-planetarian.

The Moon and Mars were the two most likely candidates for life in the solar system; what exists beyond our solar system is mere guesswork.

For planetary explorers like us, there is little that can compare to the sighting of activity on another solar system body. This has been a heart-stopper, and surely one of our most thrilling results.

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.

Man must at all costs overcome the Earth's gravity and have, in reserve, the space at least of the Solar System.