Dallas shows an orrery – a mechanical model of the solar system. Before the 17th century most people believed in a geocentric model of the solar system. Dallas explains the geocentric model and ...

A fascinating blend of mechanics and magnetism brings a solar system model to life. Each planetary movement is guided by magnetic forces, creating a seamless and mesmerizing display. Precision ...

An Egyptian astronomer called Ptolemy (AD100-168) described one of the earliest ideas for how the Solar System is structured. Ptolemy’s model and many earlier ideas of the Solar System had the ...