Many people would ask the question, "If the 10th planet of Nibiru really exist and there is really an advanced civilization living on it, then how could they survive being so much farther from the Sun than the Earth?"
It important to note that without an atmosphere, Earth would be a cold essentially lifeless planet.
So in order for the colonies of Nibiru to maintain the temperatures they needed, they utilized metallic particles of gold to create an atmosphere. It might be artificial but it is an atmosphere nonetheless.
They would then be able to trap heat from the Sun and maintain temperatures sustainable to life in deep space.
It is interesting to note in the first page of the Bible, the God(s) that creates man seems to recognize gold as a good find in the regions of ancient Mesopotamia among the Pison river.