Ketu has a significant role in significations of the house, where ever it is posted. Ketu is believed to be the repository of past and present karmas and is associated with a variety of significations in astrology, including asceticism, assassinations, contemplation, desire for knowledge, deep thinking, imprisonment, poison, intrigues, magical powers, poverty, mysticism, and spiritualism. It is believed that the part of the body associated with the house where Ketu is in a birth chart may have a birthmark, such as a burn mark, cut, or black spot. The individual may also experience irritation or pain in that part of the body.
Ketu is also known for his ability to curtail the qualities of the planets that come into contact with him, either for good or for ill. He is seen as a powerful and unpredictable force that can bring great success or great failure to those under his influence. Ketu is associated with detachment and damages to the significations of house with which it is related. It can give growth to person to rise to level of King but still will detach from few of the important issues of life. It can also bring negative consequences, such as poverty, failure, and physical or mental disability. Ketu is the hidden energy related to Muladhara Chakra and its energies are hidden, mysterious and fructify as per past life deeds of a person.
Ketu is also known as Dhwajah, or the flag, and is associated with power and authority. Those with a strong Ketu placement may be blessed with positions of power and authority, but they may also face allegations of corruption, malpractice, and bribery. In cases where these allegations are false, it is believed that the individual can seek protection by placing a large flag on the top of a temple, particularly a Ganesha or Hanuman temple.
Ketu is believed to be a powerful force that can cause significant obstacles and challenges in an individual's life path. It is associated with pain, change, and the need to leave behind excess baggage from past karmas. It may also divert the individual towards Rahu, which represents the future and the need to address certain areas of life. While Ketu brings detachment, Rahu brings attachment and encourages the individual to learn new things and break away from conventional ways of thinking. It can be difficult to stand in the way of Ketu's power, as it is working to bring enlightenment and understanding of the divine plan, which is an integral part of one's destiny. Ultimately, the goal is to achieve true enlightenment and honor through the process of enlightenment brought on by Ketu.
Rahu and Ketu are often associated with things that are beyond the range of our ordinary senses, such as the infrared and ultraviolet spectrums, as well as phenomena that are considered paranormal. This could include the infrared (Ketu) and ultraviolet Rahu as well as everything that we call paranormal.
Astrologically Ketu signifies detachment, transformation, liberation, spiritualism, Moksha. It relates to mystery, hidden, secret, life in a foreign country, Jail, infections, infection related to urinary tract, maternal grandfather, paternal grandmother, eyes, poisonous speech, smoky color, chain smoker, spots on body, occult studies, evil spirits, dreams, diseases caused by infection, poison, amputation, bankruptcy, fire accident, assassination, hospital, medical practices etc.
I am of the view that there are only these two planets, who influence our life. Ketu being the storehouse of our past life deeds and provides the ground for us in life. Rahu is the future, your desires and ambitions which guides you to do particular karmas. Rahu is the future and Ketu is the past and man is bound in these two. All other planets are supporting to carry out his Karmas which are defined by Rahu and Ketu. Even, astrologically, you cannot find any event happening in life without major or minor period of Rahu and Ketu or during its transit.