WHAT IS THE IMPORTANCE OF RAHU & KETU IN ASTRO?
Mars metal is Gold but colour is Bright Red
Jupiter metal is Silver but colour is Golden/Silver
Moon metal is Gems but colour is Milky White
Venus metal is diamonds (but crystal is also under Venus; crystal like diamond reflects but not of a pinprick kind of intensity for the rays unless the crystal is cut into a fine maze of surfaces that reflects) but colour is Shining White. Venus colour is yellow too (sky blue is only a weak colour of Venus).
Sun is copper red and metal is copper
Mercury is green and the metal is brass
Saturn is blue/black and metal is Iron
There are different names given to Rahu and Ketu like Nodes, Shadows, Head and Tail, Caput, Cauda etc. The Moon is a satellite of the earth revolving around it in an orbit inclined to that of the earth round the Sun at an angle of approximately 50. The Moon completes its orbit round the earth in about a month crossing the orbit of earth twice in the same period, once when it goes from south to north and at another time while traveling from north to south. The ascending point is called ‘Rahu’ and descending point ‘Ketu’. These have retrograde motion in the zodiac at the rate of 19020' per year.
Rahu is the ascending node of the moon and it afflicts the Moon more than any other planet.
Rahu points to the direction of spiritual growth for an individual and wherever he is placed in a chart there will be a tendency to indulgence or obsession. In many ways the path that Rahu indicates is designed to lead the individual to self-destruction. It is said that Rahu gives and Ketu takes away but to be more accurate Rahu gives in the same manner that a drug dealer "gives' since what he gives is designed to hook into you and become a need which leads toward ones own downfall.
Rahu is especially associated with the sense of emptiness that must be fed regardless of the problems it causes. This is the emptiness of the addict, the workaholic or the serial killer.
Rahu has a very strong affiliation with the air. Airplanes, aviation, pilots and space travel all fall under his influence. Rahu can involve one in areas of life considered somewhat taboo by conventional society such as astrology, metaphysics, occultism, witchcraft, cults, skin diseases, executions and epidemics. Rahu also has a tendency to drive one toward areas where deception and the hidden aspect of something play a large role such as politics, revolutions, drugs, secret societies, mysteries, inventions, scientists, deceit, affairs and taboo sexual appetites.
Snakes encountered in dreams or in life are often thought to be manifestations of Rahu.
Rahu has an special affiliation with Garlic, which is said to have sprung from the ground where his blood fell.
The Seagull or Gull is known to be an aspect of Rahu.
Tamas, Rahu, Asura, Swarbhanu, Vidhuntuda, Pata, Sainhikeya, Bhujanga and Ahi. The common term is Rahu.
Rahu represents indulgence and expansion to the point of fault. Smoke, mental illness (over expanded consciousness), losses, theft, death of family members, and air disasters are other negative aspects.
Rahu does have a positive influence on gambling or speculation, which takes place in activities like investing in the Stock Market. Another positive aspect is his ability to heal diseases. Foreigners and sudden changes also fall under the area of Rahu.
The goddess Durga is often associated with Rahu and on occasion her dark counterpart Kali. The Nagas are always a manifestation of Rahu and sometimes snakes in general are considered the same. One could make a good case for Medusa of Greek mythology to be another manifestation of Rahu.
The direction Southwest is given to the rulership of Rahu.
The age of 42 is considered to be the time in which Rahu comes to full fruition.
Rahu owns no particular sign. However, he is considered exalted in Taurus (which also has a tendency to overindulge) and his fall is in Scorpio.
Rahu is malefic as a whole though he does bring about the tendency of being "lucky".
The color black is associated with Rahu as well as the color "smoke". His metal is Lead, like Ketu.
The wind or air is considered the element of Rahu.
Rahu has a Vatta constitution in Ayurveda.