Nav Grahas (Nine Planets) are considered to effect life throughout, though the effect changes from time to time. The name of the planets are Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu and Ketu. Out of these, Rahu and Ketu are shadow planets while the rest seven are full planet forms. There are Nav Graha temples in India where the people make offerings and prayers. The influence on life is according to the nature of respective planets.