Discover the solar system and its 8 planets. The sun in the middle lights up like a night light. Requires 5 LR03 AAA batteries, not included. Discover the solar system with its 8 planets. Their orbit around the sun is recreated in real proportion in 35 minutes. The sun in the middle can be switched on (bedside lamp). The Earth and the Moon can also be placed on the model and a lunar eclipse can be illustrated with the lamp.