Space. Distant and intangible, mirror of geopolitics. How can the intertwining actors and dynamics of space diplomacy be communicated to the 'general public' through the results of space missions and scientific research in a comprehensible and captivating way? The art of 'storytelling', almost as old as human beings, becomes our partner as an effective tool for transferring knowledge and conveying experiences in the context of Science Diplomacy. The starting point of this storytelling workshop is a true story. The best example of space diplomacy during the Cold War. A story that belongs to History: that of the Giotto Mission, the ESA project that accompanied Humanity to meet the Halley's Comet, making it possible, on 13 March 1986, for the first time, to observe a comet from close range. After familiarising themselves with the 'facts' through the traditional tools of history (written sources and oral testimonies - in particular the astronomer Cesare Barbieri - scientific articles and academic lectures), the workshop participants challenge themselves in the implementation of a storytelling project. The information acquired becomes the starting point to build up an original story in which the imagination complements 'what the sources do not say'. Memories, perceptions and even personal emotions, usually excluded from academic historical narration, are called upon as a resource. The pursuit of the final objective confronts participants with a series of choices, starting with the definition of the target audience and the theme, i.e. the message to be communicated to the audience. Moreover, participants are asked to build up the new story through theatre, film or comics. The exercise makes it necessary to 'translate' abstract concepts and values into images and physical actions. Names that appeared in margin notes acquire a face and a soul, transforming themselves into characters. Places often defined by place names alone take on material substance. The transcodification offers an implicit opportunity to check the understanding of the initial story and stimulates the formulation of new questions and further investigation. In short, the imaginative process becomes an opportunity for knowledge. The participants are left free to work on the production of a final work of reduced length (a theatrical or cinematographic short, a short comic strip story, an animated cartoon with open source software) or to describe the project of a larger product accompanied by a sample release (e.g. a selection of scenes or a trailer). Introduced and developed by a number of preparatory online meetings, the workshop in Erice concludes with a final sharing of the projects and products: integrated within a narrative construct intended to involve, provoke a reaction or arouse emotions, the data acquire accessible meanings, the events become businesses. There will be the possibility of publishing the results on the spacediplomacy.it portal.