or this one should at least have some basic knowledge of the horoscope. A horoscope has twelve houses and each house is called a Bhaav. In each house a number is written from one to twelve. The number in a house represents the sun sign. In the houses are situated nine planets. Some astrologers also include Uranus and Pluto in the horoscope. But actually there effect is not so marked. Generally a horoscope contains nine planets only.