There have been a lot of questions about Rahu from visitors to this site, so we will attempt to answer a few of these as best we can from the perspective of Rahu as a karmic dispositor, and therefore, a spiritual agent of human evolution and return to source. Junk DNA and Rahu have a lot to do with this, as we shall discover.
The myth behind the shadow planet Rahu speaks of the Asura Swabhanu, who was a dragon. He was sundered – cut apart – after the churning of the Ocean of Milk, wherein the last gift was amrita, the nectar of immortality, which Rahu obtained by subterfuge. So the DNA image here – the twisting strands that hold the key to the building blocks of our life somewhat resemble the whole, Swabhanu the demon, sundered in two.