Rahu

Like Ketu, Rahu is one of the nine Vedic grahas despite not being a physical planet. It is the ascending node of the moon, where the moon's orbit crosses the ecliptic from south to north, exactly 180° from Ketu. Rahu represents what you crave, what you obsess over, what you have not yet mastered, and the worldly arena you came here to learn. In modern times Rahu is associated with foreigners, technology, fame, and disruption — anything that scrambles tradition. Its mahadasha lasts 18 years in the Vimshottari cycle and is famously a period of rapid, sometimes chaotic, growth. Rahu always moves retrograde at about 18 years per zodiac cycle, mirroring Ketu.