It is said that Vishnu created Brahma, Brahma opened the Golden Egg and created the Universe and the Heaven. He also created the 4 children from his brain or head. He then created 9 Prajapatis and 14 Manus. If that's the case what is the difference between the roles of Prajapatis and Manus?
Also, can we say that the 4 children from the brain or head of Brahma are the 4 Vedas and the 9 Prajapatis are the 9 planets? If that's the case, what about the rest of the Universe? Are there other Prajapatis for other parts of the Universe?