AS101 Final: as101 chap 4 part 5
Document Summary
Another important figure in greek science is claudius ptolemy (90-168 ad, although these dates are approximate). He developed a model of the universe based on his observations and those of his forefathers which predicted fairly well planetary events of the future. One of the more serious issues that any model had to overcome was that of the retrograde motion of some of the planets. This concept (the earth-centred universe) was so ingrained in all. Western thinking, that it influenced the development of science for centuries. Early attempts to model the solar system and the universe belong to the egyptians and the greeks (around the time of christ). Ptolemy (greek) came up with his circular orbit/epicycle/earth- centred model around 150 a. d. Nothing much happened for about 1400 years the dark ages. All this time two things were particularly important for church and science. Earth was at the centre of the universe!
