Solar System

The Solar System consists of the Sun and those celestial objects bound to it by gravity, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. Of the retinue of objects that orbit the Sun, most of the mass is contained within eight relatively solitary planets whose orbits are almost circular and contained within a nearly-flat disc called the ecliptic plane. The four smaller inner planets; Mercury, Venus, Earth and Mars, also called the terrestrial planets, are primarily composed of rock and metal. The four outer planets, Jupiter, Saturn, Uranus and Neptune, also called the gas giants, are composed largely of hydrogen and helium and are far more massive than the terrestrials.

Copernican Orrery Kit

 
£44.95

This kit assembles to make a working model of the Solar System including Mercury, Venus and the Earth and Moon. It shows the relative movements of the planets around the Sun, and the Moon around the Earth. The Sun contains a light source which can be used to demonstrate how night and day, the phases of the Moon and the seasons are produced. This is an excellent model that can be used for personal amusement or as an aid to teaching.

£44.95
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