En provenance du Palais de la Découverte Lot n° 18

Model heliocentric system representing the movement of the planets around the Sun. The orbits of the planets and their periods of revolution are represented in proportion to their actual values. We can see that a planet rotates more slowly the further away it is from the Sun. The diameters, on the other hand, are not respected. The model is presented in a metal structure equipped with a porthole allowing observation of the system. im of the whole structure: 220 cm x 210 cm x 253 cm.