With Ketu in Cancer, the shadow planet is usually in an unpleasant appearance. This is because of the negative impact that will be reflected upon the natives of this combination. Moon is the ruling planet of Cancer.
Ketu is the second shadow planet. It is believed to be the tail of the dragon body. Ketu in Aries is a very pleasing appearance. However, Ketu will be dominating Aries in this placement along with much of its potency.