The Rosetta Mission

Rosetta is also an extraordinary mission because to imagine trying to design a spacecraft that could fly halfway across the solar system to an object that was only 20 kilometers across. I think if you've seen that in a science fiction movie any time before you thought that was just ridiculous. Seemed impossible challenge for Europe to take up in the early 1990s. So it was 10 years of thinking and designing building and then 10 years waiting as it traveled across the solarSystem. And then an incredible day in November 2014 where we released the probe and waited to see what happened.