It's almost like a cryogenic preservation chamber of what the solar system was like 4 billion years ago. It's a great way to get insight into the formation of the solar system.

It's going to be challenging for New Horizons to fly through Pluto's system and image all these moons.

That was somewhat surprising because ground-based observers had been trying for more than a decade to find new satellites around Pluto. But I felt almost certain even when I first saw them that they were real objects - not any sort of artifact - and that they were exhibiting orbital motion around Pluto.