Physical immortality here is very unlikely, even w/ medical advances that would prolong life many times over what is expected now. Medical science is now making some very good advances in experimenting w/ things like stem cells on regenerating various degraded parts of the body. Just saw a recent article on Yahoo or some internet news site about promising experiments using stem cells to repair macular degeneration w/ eyes.

Our spirit is, however, immortal or infinite.

Interestingly, in the Bible, there are accounts of the first few generations of humans they discuss living much longer life spans, like 900 years. While this is largely dismissed now, it may have more validity than is thought. It is always useful to view dismissiveness of ancient myths in the context that the advanced city of Pompeii was viciously ridiculed as utter fantastical myth until they discovered the whole thing preserved in volcanic ash.

While it might be possible to physically manifest in different Ds, this would take a great deal of ability & skill w/ moving back & forth dimensionally. Much more than most here have. The physicality would likely be consistent w/ the level of physicality of the highest D one was occupying. Up through 7D (1-12D) there is supposed to be lesser degrees of physicality w/ each D, taking a great deal of energy for a higher dimensional being to manifest physically w/ our same or similar density so we could perceive them if our frequency isn’t already raised substantially. In 3D our physicality is very dense. By dense, I mean solid or firm, not stupid. A 5D+ being may be able to be here, but whether we would be able to perceive them may be largely dependent on both our ability to see them & their ability to lower their frequency. Even if we could perceive them, they might be in the not very dense form of what we would call ghost-like w/ a great deal of transparency.

From 8D+ we exist as pure energies unless we choose to manifest physically as planetary - universal beings. When we sleep, we do allot of work w/ our spiritual team learning to navigate these Ds. We can connect dimensionally nonphysically fairly easily, even though this is real work in changing how we think, not just wanting it.

When we expand to being higher dimensional beings full time, the reality of what we deal w/ will certainly be different, but will be just as real as our reality is to us now. It will be more fluid & changeable. Our physics is beginning to understand how changeable things are as they explore how energy is organized.