I'll way in, but just briefly. I was told by an old acquaintenance of this, and he told that it was speculated, AND IT'S ONLY SPECULATION, there two different creations are being refered to.
One for a pre-existance Earth where Satan met his downfall, and the one for the current Earth as we know it. It is speculated, and please see the word "speculation", that the fall of satan as told in the Old Testament took place on a pre-existant Earth. It was destroyed and awaited to be made anew by the Lord God. It's called the "Gap Theory."
If anyone else has heard of this let me know through this discussion or private reply. I'd like to find out if anyone else has heard of this.