As per Indian Astrology, Nav Grahas (Nine Planets & Nodes) play a crucial role in the life of an individual. The nine grahas are Surya (Sun), Chandra (Moon), Mangal (Mars), Budha (Mercury), Brihaspati (Jupiter), Shukra (Venus), Shani (Saturn), Rahu (North Lunar Node) and Ketu (South Lunar Node). It is believed that the constant movement and subsequent positioning of these grahas over the course of one's life determine the present and future events for that individual.
The study of grahas or planetary positions is one of the most important prerequisite for the Hindus in India before any major event or ritual such as housewarming, marriage, starting of a new business, etc. The current grahas are studied by an astrologer who then gives a go-ahead, recommends corrections or simply rejects the planned event based upon his assessment of the current planetary position in the persons horoscope.
The Navagrahas (Nine Planets & Nodes) are hereunder explained in detail: