"In Vishnu Purana, in the final dissolution Vishnu assumes the form of Rudra, the destructive persona of Shiva, and proceed to set the world ablaze. The seven main rays of the Sun which are mentioned in this myth are, according to Hindu Astronomy in this myth the most important among its thousands. These seven are all identified by name and supply heat and light to the moon, stars and the planets Mercury, Venus, Mars, Jupiter and Saturn. The blaze is followed by a flood and then a period of quiescence and regeneration."