There is already scientific study happening on Quantum Time Travel
Quantum mechanics of time travel - Wikipedia, the free encyclopedia
When I mentioned Spirit form, I was talking in layman language. Scientifically, it means the soul is the indestructible particle with characteristics similar to a neutrino. I call this particle as "neu"
This "neu" is bound by a weak force as a result of the electromagnetic activity of a live being with a sufficiently developed brain.
The "neu" as a particle is explained for the first time by me so there is no scientific research on this aspect. My thoughts are speculative at best with some background research i have conducted.
If the "neu" exists as a particle bound by the a hereto mysterious weak force (which may people may call as aura or spiritual force) in a living being, then it is imparting consciousness to the living being and if the "neu" attains sufficient energy, it can escape out of the living being and travel through space time dimensions which exist parallel to the current dimension of the living being.
And I am of the belief that advanced civilizations would have well advanced (as also some ancient earth based civilizations) in this aspect of being able to influence and control the "neu" and thus be able to travel through space time dimensions without needing to engage in actual physical travel and yet be able to experience everything as they would have traveled physically.
In such a mode of travel, the physical body remains in their present space time dimension as the "neu" travels back and forth through other space time dimensions. The "neu" if sufficiently energized can connect to the witness own "neu" and create a conscious false image of Aliens/UFOS/Big foot instead of just an invisible particle which is what the "neu" is, just as is the neutrino, a billion of which pass through your eyes when you look at the sun and you never actually see it.
I will answer separately Trajanus points.