Tropical Year - is the length of time that the Sun, takes to return to the same position along the ecliptic.

Superstitions - folk beliefs. Read on for more on them.

Saturn Return - This signifies a time of transition, from one life-phase to the next and is around 29 years.

Ruling planet - this is a planet that is associated more strongly with a particular sign of the Zodiac .

Ptolemy - A Greek philosopher who propunded the Helicentric theory.

Orbital period - This is the time taken by a planet to go once round the Sun.

Ophiuchus - the 13th zodiac.

Occult - refers to secret or mysterious doctrine which transcend our natural senses.

Music of the spheres - according to this the planets rode on giant crystal spheres which emitted a musical sound when moved.

Midheaven - An important angle in the birth chart which refers to the parent.