They were here as recently as 150 years ago. They spoke about the main players in their celestial domain and pointed them out in the night sky. Today they are gone and the reconstruction of their cosmology has required the breadth of the nineteenth century natural philosopher, drawing on zoology, botany, and linguistics, ethnography, geography and anthropology, as well as patient, long-term naked eye observation. It has been an exciting and stimulating task to gradually unfold these stories of the Australian Aboriginal clan who were regarded by neighbouring clans as the best astronomers in the region.