Astrology is very deep and very wide subject. It is the combination of mathematics and Science in which the Calculations (Maths) of Degree of Cusp, Planate, Constellation star, etc are very important like Entire zodiac has total 360 degree and it is divided into 12 equal parts of each 30 degree and that is Called Sign (RASHI). It starts from Aires, Taurus and so on till Pieces. Same way there are Twelve Houses in each Horoscope and each house contain Rashi.
As per Vedic Astrology, there are Total 9 Planets in our Solar System out of which 7 Planets are having the Physical Body. They are Sun (Surya), Mercury (Buddh), Venus, (Shukra), Mars (Mangal), Jupiter (Guru), Saturn (Shani) and Moon (Chandra). All these have physical body and they rotate on their axis as well as revolve around sun. Only Moon revolves around Earth also.
The two Another Planets are Rahu and Ketu, Which are actually the Shadow of Moon on earth During Solar Eclipse and Shadow of Earth on Moon during Moon Eclipse. So they are called Chhaya Grah (Shadow Planet). Than someone think how these shadow Planet effect? I will say it has great effect on everybody on earth. Say for example in the month of May – June (Full Summer Season) if we go outside, we feel too much hot and we try to find out the Shadow of any tree or any big Building or any big Vehicle under which we can feel better. Same way this shadow also effects on our life.
Now another important Thing is Constellation Stars (Nakshatras). There 27 Nakshatras in entire Zodiac of 360 degree. So if we divide the Zodiac into Equal Parts i.e 360 degree ÷ 27 = 13 degree 20 ‘ of each Nakshatra Space. These Nakshatras plays very important role in astrology prediction and the events. That’s why the most of the Dasha’s (Vishottari, Ashttotari, Yogini etc) are calculated on the base of Birth Nakshatra of a person. Each nakshatra give specific effects on the human. There are Twelve (12) Sign so if we divide 27 Nakshatra, (27 ÷ 12) = 2¼ (Average) Nakshatra for each Sign (Rashi). Means if a person Born in same Sign with Different Nakshatra, than there will be different in nature, thinking, career, study etc.
Now the nakshatra’s are Too far from Earth than how it will effect? The ans is that These nakshatra Lords are Planets. There are 9 Planets and Each Has is the Lord of Three(3) nakshatra and Planets are very near to earth as they are in our Solar System So the Effect or the matter Suggested (Represented) by a Particular Nakshatra is full filled by its Lord (Planet) during its Dasha Period or Transit period. It may be either Positive or Negative. Planets and Nakshatras also Represents the basic 5 (Five) Elements i.e Earth (Pruthvi), Water (Jal), Fire (Agni), Air (Vayu), and Space (Aakash). Which is Purely a Science?
So Astrology is the Science of Calculation of Time and Space because all Planets are moving at Different Speed at Different Distance from the Sun. e.g Earth Completes One Revolution on 1 Year. But The Jupiter take about 12 years to complete one Revolution and Saturn takes about 30 years to Complete one revolution So Earth’s 12 Year = Jupiter’s 1 year, same way Earth’s 30 years = Saturn’s 1 year.
One more and very most important thing is the Astrology is also a divine science, it also Spiritual Subject because it is VEDAANG. So an Astrologer must be highly spiritual person and should be blessed by god to get quick intuition to get the correct prediction as well as to suggest proper remedy to his client. Astrologer can work as a bridge between his client and the God to suggest him to get relief from his problems. So a successful astrologer is only one who is First Attached with God and also has the study of Astrology.