 Opened to the public on June 18, 1981, the planetarium is equipped with a Carl Zeiss projector, model ZKP2 identical to that of Reims, Nimes (which will open a year later) and Marseille (which will burn quickly).Between 1999 and 2000, the City of Nantes expanded the premises with two offices of 9m2 (97 ft2), which allows to expand the lobby and install some models and collections of meteorites.5 years later, in the autumn of 2005, for approximately 480,000 euros, the opto-mechanical projector Zeiss is replaced by a digital type installation and the City of Nantes has offered its former planetary Zeiss at the National University of Córdoba (Argentina ).