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According to Indian Astrology, the destiny and traits of an individual are associated with the position of the planets on the date and place of birth. These nine zodiac planets or Hindu nine planets or Navagraha put out energy waves to influence the lives on Earth. They sharply affect the life, its ups and downs and behavior of the person. The Indian astrology considers the movement of two luminaries, Sun and Moon, five major planets (Mars, Jupiter, Saturn, Venus, and Mercury) and the two nodal points of the Moon i.e Rahu and Ketu. It however does not recognize Pluto, Neptune, and Uranus. 

The birth of nine planets astrology in Indian astrology happened before the invention of telescope. During this time two types of stars were visible to the naked one. One category was the fixed stars and the other was wandering stars. Fixed stars were motionless and wandering stars used to change their position in respect to tthe fixed stars. These nine planets in vedic astrology affect the horoscope and the life of an individual.

These zodiac nine planets are also called Nava Grahas in which nava means nine and grahas means to seize or to take hold of. The word grahas has been derived from the Sanskrit word grih. So these nine zodiac planets in astrology hold our lives and influence it. These nine sign planets in astrology are nothing but the forces and will of the God. 

Seven out of nine planets are the days of the week not only in Hindu calender but also in European calender. Like Sun is the governing planet of Sunday, Moon of Monday, Mars of Tuesday Mercury of Wednesday, Jupiter planet rules the Thursday, Venus planet governs Friday and Saturn the Saturday. The rest of the two planets Rahu and Ketu are not planets but the moon's nodal point and are difficult among all these nine sign planets astrology. Manifestation of the nine zodiac planets on each other is calculated by the angles they make with each other when seen from the Earth.