The astronomical space interpretation and models, in which the cosmic space perceived mathematically and abstract.
First are imitated astronomical maps. The mapping takes place at predetermined urban places, which is depending on the concept of the social, historical or cultural context. Materials to trace the maps may vary.
In Dublin, Ireland, confetti and sugar were distributed in various locations in the city, associated with certain astronomical interpretation and referred to literary description of the city, partly involving pedestrians. Here, the confetti or the sugar granules replace elements of a fictitious star mapping in an already defined space.

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