Planetario de Copérnico
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In the sixteenth century, Nicolaus Copernicus published a model of the universe in which the Sun (not the Earth) was at the center. The above hypothesis is maintained since the second century, when Ptolemy had raised a geocentric model that was used by astronomers and religious thinkers for centuries.
Copernicus proposed the heliocentric model and discussed in his book "De revolutionibus Orbium caelestium" which was published just before his death in 1543.
The theory of Copernicus stated that the Earth revolved on itself once a day, and oncea year was a complete revolution around the sun. Also stated that the earth in its rotary movement, bent on its axis (as a spin). However, still it had some early ancient cosmology, like the idea of spheres within which the planets and the outer sphere where the stars were still found.
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 center 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.
ENGLISH AND SPANISH INSTRUCTIONS
Size of orrery assembled:
Height: 29.5 cm, diameter: 29 cm
Construction time: 20-30 hours
Dimensions: 22cm x 30cm x 6cm
Weight: 780 gr
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