Thoughts on Nibiru
1) Nibiru (the 12th planet) is past Pluto, very far past Pluto. How far I don't know. Only certain kinds of telescopes can see planets. Most telescope use light refraction to magnify the image. Well, planets don't emit light and a planet that is about 2x the distance from the sun as Pluto will have no light reflecting off of it. So it will not be seen as easily. Also scientists have detected an extremely large mass coming towards our solar system but they don't know what it is yet. *And remember it is in another dimension as well*
2) This one is trickier. Nibiru's atmosphere is made up of powdered gold. Now when it does get close to the sun the atmosphere picks up a lot of heat and the gold keeps it there. So when it passes out of our solar system there is still heat on the planet. Also heat from the planet core could be used to heat the planet in the same way. As for their base forms, depends what race of gods we are talking about. I'm not sure if they evolved on Nibiru or traveled there.
P.S. I am not the most knowledgable person when it comes to this subject. Most of this information was given to me by someone from whom I asked advice. I do know that the Nephilim no longer live there and I believe Nibiru is now inhabited by the Elohim (I believe this may be the race of Jehovah, not 100% sure.) *Remember, there are certain questions that cannot always be explained with a clear answer in every "faith," however, If you continue to ask questions, I will do my best to research them so that I may be able to provide answers. * I don't know what you said to suppossedly had gotten an immediate ban from the Yahoo chat room, It's too bad. In my experience, If you go in there with and open-mind and are not insulting, they can really help clear up confusion.
By the way, If you wish to continue to exchange messages with me, I woud suggest that you send me a PM instead. I don't believe this topic of conversation is appropiate for this particular forum.