What is the purpose of Grah Shanti Pooja?

The main purpose of Grah Shanti Pooja is to appease the nine planets and seek their blessings for a happy and harmonious life. People believe that the nine planets (Surya, Chandra, Mangal, Budh, Brihaspati, Shukra, Shani, Rahu, and Ketu) have a big impact on their lives, and doing Grah Shanti Pooja can help fix any problems that the planets cause.