Fish assumed that one of the fifteen stars on the map must represent the Earth 's Sun .
Fish constructed a three - dimensional model of nearby Sun - like stars using thread and beads , basing stellar distances on those published in the 1969 Gliese Star Catalogue .
Assuming that one of the fifteen stars on the map must represent the Earth 's Sun , Fish constructed a three - dimensional model of nearby Sun - like stars using thread and beads , basing stellar distances on those published in the 1969 Gliese Star Catalogue .