Ketu of the southern point of the Moon also known as the “Chayya Graha” or shadowy planet is considered a worldly malefic and spiritually benefic planet.

Astronomically, Ketu and Rahu denote the points of intersection of the paths of the Sun and the Moon as they move on the celestial sphere.Therefore, Rahu and Ketu are respectively called the north and the south lunar nodes.The fact that eclipses occur when Sun and Moon are at one of these points gives rise to the story of the swallowing of the Sun and the Moon.