ABSTRACT
The astrologer’s cosmology is, of course, geocentric, reflecting the general consensus in antiquity. Though Aristarchus hypothesised a universe centred round the Sun in the third century BCE, this hypothesis never found general support. The geocentric cosmos accorded with perception from Earth: we look up to the sky and see the Sun, Moon and planets revolving round us. It seems as if there is a dome above us in which the stars are fixed, and thus a celestial sphere was envisaged revolving round a stationary Earth (Figure 3). The Earth was regarded by ancient astronomers as spherical, as a result of observation of its curvature.
