Maybe the reason we think other galaxies are forever out of reach is because we're trying to understand the universe only from the perspective of our own dimension.

Imagine a 2D being living on a flat surface. It could move left, right, forward, and backward, but the concept of "up" would be incomprehensible. No matter how intelligent it became, it could never truly experience the third dimension. To such a being, moving one meter upward would seem as impossible as magic.

Perhaps we are in the same situation. We live in three spatial dimensions and experience time as a one-way flow. If a fourth spatial dimension exists, then distances that appear unimaginably vast to us might be trivial from a higher-dimensional perspective. Entire galaxies could be connected in ways that our minds simply cannot visualize.

We often assume that because we cannot reach another galaxy with our current technology, it must be fundamentally unreachable. But that assumption may be as limited as a 2D creature believing there is no such thing as height.

The universe may not be inaccessible; it may simply be operating on levels that our brains were never evolved to understand. Trying to imagine higher dimensions could be like trying to describe color to someone born blind, or trying to explain a world without time. We can use mathematics and analogies, but true understanding may always remain just beyond our grasp.