ESTEC: The heart of the European Space Agency

Space Boffin Sue Nelson is at the European Space Agency's technical heart - ESTEC in the Netherlands - where spacecraft undergo a crucial 'shake and bake' before launch. She's joined by astronauts Paolo Nespali and Andre Kuipers, ESTEC head Franco Ongaro, Rosetta's mission manager Fred Jansen, and Andreas Jung, from Europe's experimental new spaceplane, IXV. Tales of retro re-entry in a Soyuz, the future of space travel and how chocolate can make a comet, in yet another tasty space treat.