Vedas are the oldest, the most authentic and the most sacred scriptures to understand the mysteries of nature. According to Maxmuller, a renowned German scholar of the Vedas, 'Vedas are oldest books in the library of the world.' To understand the meaning of these Vedas, our Rishis, Maharathis have categorised the Vedas into six parts. Astrology is one of them and considered as the sixth sense which helps one to see all the unseen objects and the future events of the world.
Even Astrology is divided into three parts or subdivision :
Siddhant helps us to understand the good and evil results (effects), with the help of minute arithmetic calculations related to rising and setting of the planets, Nakshatras, stars, Rashis, the combination of planets (grahayoga), grahayudha and the eclipse of the Moon and the Sun.
Samhita means the good and evil effects, which occur due to the combination of the planets, day and night transitions and seasonal transitions that affect the whole world.
Jataka means the good and evil effects which occur during the transmigration of a soul through 84 lakh yonis, and the effects which the Isht, Lagna, Graha (planets) Nakshatras, have on the joy, sorrow, gain-loss, destiny and age.
Our most revered sages imagined about the planetary orbits by doing penance and Yoga for a long time. They also observed the motion of these heavenly bodies through a distinct and well-marked path in the sky which contains twelve zodiac signs. These twelve zodiac signs of the solar system are established in the twelve parts of our body. They are as follows:
Forehead - Aries (Mesh)
Mouth - Taurus (Vrishabh)
Chest area - Gemini (Mithun)
Heart - Cancer (Karka)
Stomach - Leo (Simha)
Waist - Virgo (Kanya)
Bladder - Libra (Tula)
Sex organ - Scorpio (Vrishchik)
Thighs - Sagittarius (Dhanu)
Knees - Capricorn (Makara)
Calf of leg - Aquarius (Kumbha)
Feet - Pisces (Meena)
The planets travelling in twelve zodiac signs have affect on the following:
The Sun has effect on - Soul (Aatma)
The Moon has effects on - Mind (Mana)
The Mars has effects on - Patience (Dhairya)
The Mercury has effects on - Voice (Vaani)
The Jupiter has effects on - Reasoning (Viveka)
The Venus has effect on - Sperms (Virya)
The Saturn has effect on - Sensitivity (Samvedana)
This implies that, the position of the seven planets and the twelve Zodiac signs are well established within our body.
The above mentioned organs and parts of the body are greatly influenced by the planets of the solar system and their movement.
Our ancient sages and Rishis, lacking the facilities of laboratories, had established the laws of Solar System, just by observing the internal solar system, which is within the body, with the help of Divine Sight and Yoga Bala.
Colonel Todd was so impressed by Indian Astrology that while mentioning it in his Autobiography 'Todd Rajasthan', has written that 'Where can we find those Astrologers, whose knowledge of the Planetary system is still amazing.'
Similarly, D.Morgan has accepted in his book 'Ancient and Medieval India', that, 'India’s Mathematics and Astrology is of greater value than that of Greece’s. Its contents are ancient and original'.
Today, even the scientific community accepts the fact that the construction of an atom is similar to the solar system. Just as the planets revolve around the Sun in their respective orbits, in the same way, the electrons revolve around the nucleus of the atom. An atom is so small that it cannot be seen with the help of the naked eye. Our body is made up of matter, which itself is made up of atoms. The law governing the movement of the planets around the Sun and the electrons moving around the nucleus of the atom is same.
Thus the planetary system within our body is just a symbol of the solar system. Nature has created the whole world in three qualities (Gunas). They are Satva (quality of goodness) Raja (having both the qualities of Satva and Tama (dark qualities).
The Planets, which have predominantly Satva Guna, shed cool rays, which are like ambrosia (Amrit). The planets, which have Raja Guna, shed mixed rays and the planets with Tamo Guna shed poisonous rays. And the planets, which lack all these three Gunas, have rays without any effect. The auspiciousness and inauspiciousness of the planets have been classified on the basis of these three types of rays.
The concept of 'Muhurta' (Hora, division of time) in Indian Astrology, too is an indication of all the three Gunas of the planets and their effects on humans. The positions of the planets vary because of their movement in their orbits. There are specific moments, during which the atmosphere of the planets are favourable and they shed rays, which are helpful to us, and again there are some specific moments when these planets act harmfully. So there is great importance attached to the concept of Muhurta.
The planets and stars not only have effect on human beings but also on the non-living things. The effects which the Moon and Sun have on the oceans causes high tides and low tides. Even modern science accepts that the 71% of the surface of the earth is covered with water and only 29% is land. Even our bodies and those of all the living beings constitute the same proportion i.e. 71% in water. So, if the Moon can cause tides on a non-living like the ocean, it can definitely affect a man who is a living being with a conscious mind.