Basic rules of Astrology by Astrologer Hemant Sharma Ji
The zodiac is a circle of space surrounding the earth and is an imagined belt in the heavens in which the planets travel or as is commonly understood as the apparent path of the Sun round the earth, i.e. elliptic. It is invisible.
The zodiac has been divided into twelve parts of 30 degrees each; each part is called a Sign comprising 30 degrees of celestial longitude.
