Ketu (Sanskrit: केतु, ketu) is the introspective function of the mind that scrutinizes the inflowing stimulus.
Ketu, like Rahu is related to spiritual attainment, but works inwardly where Rahu works outwardly.
Together they function as the evolutionary and karmic orientation of the soul. Ketu is oriented toward renunciation and self-inquiry in order to perfect the inner realm.
This post includes Shree Maa singing the mantra of Ketu. Ketu is “He Who Presents Obstacles” and is the South Node of the Moon.