Rahu is a nodal planet defined in Indian Astrology as a cut-off head of a demon, that swallows the sun causing eclipses. Rahu is depicted as a serpent with no body riding while Ketu is depicted as a serpent body without head. Rahu is one of the nine major planets in Vedic astrology.
Rahu is the planet that leads to incidents which change the life abruptly. Rahu and eighth house are quite similar as even Eighth house lord and planet placed also lead to sudden changes in life.
When the Rahu period and sub period starts the native finds sudden and abrupt changes which could be positive or negative depending on the position of Rahu. Similarly results are observed when eighth house lord and eighth house placed planet period and sub period starts. If Rahu is placed in the eighth house or conjunct eighth lord then the problems are further multiplied. But sometimes some unexpected positive happenings are also observed with Rahu in eighth house.
Rahu in conjunct with different house lord
The native having Rahu in conjunct with Eighth lord in the first house should not ever think of any sinful act. Even a sinful act done secretly will have severe repercussions.
If Rahu is placed in second with the lord of eighth house then the native gets financial gains from others. This can also be in the form of shares, lottery, gambling etc.
If Rahu is placed in the third house with eighth lord then the person has to face the troubles for his own acts in life. The person lacks stability in life. If malefic planets are placed in the 8th house then he may face lots of accidents in Rahu period.
If Rahu is placed in the fourth house with eighth lord then the native has to face lots of ups and downs in family life. If benefic planet is placed in the 8th house then there are chance of getting hidden money.
If Rahu is placed in the fifth house with eighth lord the native gets success through the support of some famous personality. He gets the cooperation of others.
If Rahu is placed in the sixth house with eighth lord then the native gets success in his work after taking loan. He success depends on the strength of the eighth lord.
If Rahu is placed in the 7th house with eighth lord then he has to face lot of troubles in marital life. He has to word hard to sustain his livelihood.
If Rahu is placed in the eighth house with eighth lord then he has blessings of the nature that saves him from danger in most cases. The stability of the native is affected.
If Rahu is placed in the ninth house with eighth the native has to face lot of obstacles in life. The fate hardly supports and he has to achieve on the basis of his hard work.
If Rahu is in the tenth with eighth then the career is unstable. But the person gets benefit from others losses.
If Rahu is in the eleventh house with eighth lord then the native has to face conflict with his friends and relatives. Unexpected achievements are observed in such situations.
In 12th house, Rahu with eighth lord the native has to spent his hard earned money on evil deeds.
According to legend, during the Samudra manthan, the asura Rahu drank some of the amrita (divine nectar). Sun and moon realized it and they alerted Mohini (the female avatar of Vishnu). Before the nectar could pass his throat, Mohini cut off his head. The head, however, remained immortal due to the effect of amrita and became Rahu. It is believed that this immortal head from time to time swallows the sun, causing eclipses. Then, the sun passes through the opening at the neck, ending the eclipse. The body also turned into Ketu due to a boon, and it in turn swallows the moon on timely basis to cause a lunar eclipse.