Zero-transportation in space

On the pages of science fiction novels, you can often meet with an almost instantaneous overcoming of huge cosmic distances, where "zero-transportation in space" - "jump" in space through millions and hundreds of millions of light years plays a major role. But what is zero-transportation in space and is it really possible? It turns out that it is based on rather interesting considerations.

On the pages of science fiction novels, you can often meet with an almost instantaneous overcoming of huge cosmic distances, where zero-transportation in space

To begin with, in one-dimensional space there is only one dimension - length and only two possible directions - forward and backward. In two-dimensional space, in addition to length, there is also a width. If we lived in such a space, we could come to a theoretical conclusion about the possibility of the existence of a larger number of dimensions, but the path to the next dimension would be closed to us. Exactly the same arguments are valid for our three-dimensional space, if it were enclosed in some even more extensive, four-dimensional space.

In three-dimensional space, there are three mutually perpendicular "basic" dimensions - "length", "width" and "height". If a fourth one could be added to these three directions, also perpendicular to each of them, then the space would be four-dimensional.

In a two-dimensional world, thanks to the presence of an external three-dimensional world, some phenomena, in principle, can proceed with the emergence of the third dimension. This circumstance in a number of cases makes possible such processes, which in the very two-dimensional world itself could not occur. For example, if you need to overcome the distance of 50 km between two points of the flat world A and B. Imagine that the two-dimensional surface is collapsed in three-dimensional space in such a way that the points of the beginning and end of the route turned out to be one meter apart. Now they are separated from each other by a very small distance, which can be overcome very quickly, making a "jump" in space. But this meter lies in the third dimension! It would be zero-transportation.

If the four-dimensional space and the way out to it really existed, surprising possibilities would open up, and a similar situation could arise in a twisted three-dimensional world...

As shown by the general theory of relativity, our world really has curvature. And if there was still a four-dimensional space in which our three-dimensional world is immersed, then to overcome some giant cosmic distances it would be enough to "jump" through the four-dimensional gap dividing them. That's what fantasy writers mean - in their works, zero-transportation is feasible.

In the theory of relativity, we are talking about the four-dimensional space of the universe. But this is not exactly the four-dimensional space that was mentioned above. The fourth dimension is time. The four-dimensional "space-time" of the theory of relativity is just a mathematical device that allows us to describe various physical processes in a convenient form.

So, zero-transportation, at least on the modern level of the development of science, unfortunately, is feasible only in the pages of fantastic novels.