In Vedic Astrology, Rahu is considered as a shadow planet, that is not a physical planet, but is considered to have significant influence on human lives. Rahu is said to cause eclipses and is associated with illusions, obsessions, and material desires. It is also believed to bring sudden events and transformations in one's life and is associated with negative qualities like greed and obsession. Its position in a person's birth chart is said to indicate areas of life where a person may face challenges or obstacles.