Copernican Planetarium Kit

Make your own Orrery and watch the phases of Venus and the Moon - but also Mercury. Show why we have winter when we're actually closer to the sun in the Northern hemisphere

This is a mechanical model of the inner planets - Mercury , Venus, the Moon and the Earth. This large, stable device uses the idea of a mechanical crank as used in the 18th century in England when Orreries were first produced. A crank rotation causes six different movements: The inner planets Mercury and Venus revolve around the sun, the moon around the earth, with their oblique axis always in the same orientation. Instead of the traditional gear transmission there are grooved belts and wheels made from NBR rubber for the correct transmissions. Made from punched heavy die cut Cardboard, all accessories (axes, magnets, belts, planet balls, plastic bearings, LED ball, etc.) are included. Described with full detail instructions for assembly.
Many celestial processes can be seen. A highlight is the 45 mm sun with LED lighting. The kit shows in a darkened room not only the change of seasons, but also the emergence of the phases of the moon, the darkness and the phases of Venus.

Many celestial processes can be seen. A highlight is the 45 mm sun with LED lighting. The kit shows in a darkened room not only the change of seasons, but also the emergence of the phases of the moon, the darkness and the phases of Venus. A world premiere: the first ever fully functional cardboard orrery! It demonstrates the movements of Mercury, Venus, Earth and Moon around the Sun. One turn of the crank represents one week and shows the relative movements of the heavenly bodies accurately. The 4.5 cm measuring illuminated sun in the centre helps demonstrating the seasons, phases of Moon and Venus, eclipses, and much more. A fantastic kit that never fails to impress! Kit includes axles, magnets, pulley belts, planets, bearings, and LED light. Time to build: 20-30 hours