Worship of Lord Ganesha is most beneficial for pacifying the planet Ketu. According to Astrology, each planet is related to a certain deity/goddess. The energy or qualities of that planet are similar to the energy and qualities of that deity. Lord Ganesha is considered to be the lord of Ketu because according to mythology, Ketu only has torso, not a head, and Shri Ganesha also had only a torso and not a head
