The exhibition space is 220 square metres and it is a modular room. This allows the Planetarium to add additional capacity which has become essential due to its high activity. The exhibition room can also be transformed into a lecture theatre with a 150-seat capacity.
The first exhibition which took place in the showroom was on the impact craters and meteorites that roam our Solar System. Some samples of real meteorites which had been found in the Vosges were exhibited. After the show, you were invited to take a look at the riddles hung on a wall which you could try to answer for fun or to check what you had really learnt.
A shop for young and old scientists has also opened on the site so as to present many gadgets concerning what the sky is made up of. The exhibition room is also the area in which workshops for children are held. This is where everything is happening.