Claudius Ptolemy was a Greek mathematician, astronomer and geographer who lived in the Egyptian city of Alexandria while under the rule of the Roman Empire. Much of medieval astronomy and ...

Ptolemy’s model and many earlier ideas of the Solar System had the Earth at the centre of it. As observations of the motions of the planets became more detailed, the descriptions of the Solar ...

Now researchers have managed to recover the text written by Ptolemy on a parchment that suffered such a previous recovery attempt. Outermost six rings of the meteoroscope, not to scale.

Ptolemy was not the first classical author to describe Central Europe, and the territory of Bohemia, Moravia and Silesia in particular. The importance of his work is rather concerned with a list of ...