In Vedic astrology, the Navagraha are the nine celestial bodies that influence human life: Surya (Sun), Chandra (Moon), Mangal (Mars), Budha (Mercury), Guru/Brihaspati (Jupiter), Shukra (Venus), Shani (Saturn), Rahu (North Node), and Ketu (South Node). Each Graha governs specific aspects of life and is associated with a gemstone, color, deity, and day of the week.