Fig. #3. The above diagram shows the nature of the creation of the bubble within a bubble pattern for the Triune Planes of existence upon The Earth Experience.
Firstly, please locate the very small white circle in the very center of the diagram. This is Planet Earth's Astral Plane of Common Reality. Notice the white and black circles around it; they are our sister planes -- Earth's parallel planes.
Notice, also, the seemingly dark space around the nine Astral Planes cluster in the very center of the diagram. This is Planet Earth's Sea of Un-Created Futures -- Planet Earth's Now Zone.
Further, notice that all nine Astral Planes, with its respective Now-Zone is also encased within a single bubble, as it were.
The Ka's travel is limited to Earth's Astral Plane of Common Reality and its respective sub-levels. Even if the Ka gains the ability to travel, it cannot travel above its own level. The Ka may travel freely through the space of Common Reality, but it cannot travel in Common Reality's time. Also, the individual must use his Mind to travel to and from the sublevels of Common Reality.
The Ba is limited to the nine Astral Plane cluster in the center bubble of the diagram, and the cluster's many sublevels. Again, even if it gains the ability to travel outside its boundaries, it cannot travel to Other-World's levels that are higher than its own levels of experience.
The BaKa is limited to traveling in the eighty-one Astral planes, shown divided into nine bubbles, each containing a single nine Astral Plane cluster bubble. Still, even if it gains the ability to go outside its limits, it cannot rise above itself to higher levels of experience.
The Sacred Ka can travel freely outside the single divided bubble shown as Fig. 3; but, it too cannot venture above it's level of awareness.
We are reminded of the law: An individual can see all that is below him, little that is par to him, but nothing that is above him.