Rahu Yantra should be installed and worshipped to pacify and reduce the negative effects of planet Rahu. The planet Rahu is a shadow planet which means that it does not have any physical existence. Even then the positive as well as negative effects of planet Rahu are very profound on human lives and have been very well documented in our Ancient sacred texts and unfavorable planet Rahu can cause all kinds of problems, obstructions, failures, illness and confusions which might lead to a very miserable life. Even when planet Rahu is in conjunction with planets like Jupiter, Mars, Saturn, Moon and Sun, it forms various bad Yogas which can result in all kinds of troubles in a person's life.