Ketu is a shadow planet and it does not have a physical existence in the universe. In Vedic astrology, Ketu represents spirituality, detachment, and enlightenment. When Ketu is placed in the 10th house for Aries ascendant, it can bring significant changes in the career and professional life of the native. Moreover, when Ketu aspects certain houses like 12th, 4th, and 7th house, it influences various other aspects of life as well.