Traveling through other dimensions is the same as traveling in our own dimension. What divides spectrums of perception (dimensions) is not time, but pressure. Traveling into another dimension is like going to the bottom of the ocean; however, in order to move from one dimension to another, one must be able to overcome much more pressure than must be endured to go to the bottom of the ocean at its deepest point. Just like in deep sea explorations, a craft must be pressurized from the inside in order to compensate for the pressure on the outside. In order to travel to another dimension, one must be pressurized from the inside as well. Because the pressure of other spectrums exists outside of our solar spectrum (3D) pressure boundary, it's going to take an advanced technology which doesn't exist yet. This technology will pressurize both man and or craft from the inside using the natural electron conduits that exist all around us and also within us. Before we can pressurize a craft or a man in this way, we are going to have a computer program that understands these electron conduits; how they are structured and how the particles that are rotating and orbiting around us and through us, work. This universe we live in is a machine and we are going to have to understand how it works before we can make these new discoveries.
Time travel is impossible! It's true that time does slow for a craft or person in motion but this is strictly a mechanical function of pressure. If you take two clocks, both synchronized and put one of them under pressure, the clock subjected to the most pressure will move slower than the other. So moving a craft or a person into another pressure spectrum is not about time but pressure.
With regard to technology, other dimensional travel will begin with a craft, just like under water travel begins with a craft. However, as technology advances, it will be possible for a person to move from one dimension to another without a craft, at least not a conventional one. The human aura is such a craft that allows us to move from one dimension to another. This is how we get from here to there in the blinking of an eye when we leave the earth (die).
One thing I would like to point out; beings with advanced technology are not always higher beings. Imagine our own society developing technologies that can take us from one pressure spectrum to another. Science is on the doorstep of doing this now. True, science may take a leap forward but society will not change. People evolve one at a time from within. Societies, races and religions don't evolve. However, from time to time, one of the people within these groups evolves. Our journey towards God is an individual journey.
All of the beings in the universe evolve in the same manner. There is consistency in the universe. It works like a clock. Anything can be figured out through logic- even God! There is only one spectrum of perception that supports life naturally; the solar or atomic spectrum- our dimension!
Living or traveling in another pressure spectrum is like being on the moon or under the ocean. All beings must have a device to be there, like an aura which all beings came into the world with. However, this technology is divine and although science will eventually discover how to travel to and capitalize on other dimensions, they will never discover the technology of the creator. That must be given by the creator! The universe exists for one purpose; to allow a being to evolve into the type of person that can live in an eternal community. We will try to imitate God's technology but these efforts will fall short. This divine technology will be discovered by people, one at a time, from the inside; not by science, societies, races or religions but by individuals. It will be those who have the courage to explore the light which exists at the other end of the darkness; the light which exists within each and every one of us. That's what it takes to be a divine being. Any other kind of effort, to include other dimensional travel, amounts to nothing more than children playing with toys or cavemen with stone tools. It doesn't matter how far technology advances, it will never take us all of the way. Anything that falls short of divinity is folly! The evolution of man can only occur from the inside, when we finally discover that this technology was already there waiting for us to discover it!
I wish you luck in your journey-