 The Planetarium of Nantes also weaves a network among the local actors like the Laboratory of planetology of the University of Nantes, , the science and environment pole Sequoia, the Society of Astronomy of Nantes, the association "Meridienne" , and many others, all working in the field of research or scientific mediation including astronomy.In 1979, the City of Nantes decided to build a planetarium.At that time, in France, there is only one large planetarium