He wrote the Tetrabiblos, or Four Books, and laid the foundations of a true astrological science.Julius Firmicus confirmed Ptolemy and enlarged upon his observations.Incomplete as it must needs be, it is yet a veritable science both as to its principles and practice.
The other planets, having orbits greater than that of the Earth, will appear to revolve around it at constantly varying distances and velocities.
As far back as the year 2154, we find mention of the great importance attaching to the celestial phenomena in the minds of Chinese rulers.
It is recorded in the Historical Classic of China that at that time the astrologers Hi and Ho neglected their duties so that when, on the 10th of October, there was a great eclipse of the Sun at Peking between seven and nine o’clock in the morning, the people were wholly unprepared for it, and “ran about here and there in the utmost consternation.” For this offence Hi and Ho were deprived of their offices, their estates were confiscated and they were driven from the kingdom.
Among the Hindus we have the classical writers Garga, Parashara, and Mihira, together with their legions of commentators.
The Assyrian records are full of astrological allusions regarding the influence of planetary conjunctions and stellar positions.