When we come to the astrological aspect, it is a very vast subject, for it has a connection with every existing art and science. Vowels and words have their connection with the astrological science. By invoking a certain word one invokes a certain planet, either in order to diminish its influence if it is unfavorable, or to increase its power if it is favorable. Therefore in the astrological science of the Hindus every name given to a person is given in accordance with the astrological science.