What is the universe like? What is space like, and can space be traversed theoretically?

1) The universe is a unity composed of space, time, matter, and energy. It is a synthesis of all space and time. The universe as it is generally understood refers to a continuous system of space-time in which we exist, including all matter, energy, and events in between.

2) Philosophical definition of space: space is a component of concrete things, a manifestation of movement, an object of cognition that people decompose and abstract from concrete things, an antithetical unity composed of absolute abstract things and relatively abstract things, meta-ontology and meta-entities, and ordinary individual members who exist in the world collective and cannot be felt but can be known. Space is an integral part of concrete things, and it is a general regulation that concrete things have.

The concrete things that the eyes can see and the hands can touch are all concrete things in a certain spatial position, and they all have specific rules of space, and specific things without space regulations do not exist at all. Human beings exist in the earth's natural environment, the earth exists in the space environment of the solar system, the solar system exists in the space environment of the Milky Way, the Milky Way exists in the space environment of the universe, and the universe formed and produced by the Great ** also has specific regulations on time and space, and it is also a specific thing that exists in specific time and space. The earth, the sun, the Milky Way, and the universe that are separated from a certain spatial position are not the same specific earth, sun, and galaxy that people refer to.

3) Albert Einstein proposed the "wormhole" theory. To put it simply, a "wormhole" is a thin tube of space-time that connects distant regions of the universe.

Let's say everyone is in a rectangular square, the upper left corner is set to A, the upper right corner is set to B, the lower right corner is set to C, and the lower left corner is set to D. Suppose the rectangular square is full of buildings, and your starting point is C, and the end point is A, and you can't go directly through the buildings, so you can only go from C to B and then from B to A. Suppose that if there are no buildings in the rectangular square, then you can go straight from C to A, which is the closest route to the plan.

But let's say you enter a wormhole, you can go straight from C to A, and you don't even need to reach the shortest distance. This is called a wormhole. However, due to the excessive gravitational pull of the wormhole, people cannot realize the possibility of "teleportation" through the wormhole, which is like a super-space-time transformation.

So theoretically, space can be traversed.

The universe is time, plus all matter, plus all space.

Why can't space be traversed? It is difficult for people to pass through solid matter, so why is it difficult to plant space? Isn't one step forward a step through space? Strange question.

The universe is like an egg.

Space is the whole egg.

Magnetic field lines can penetrate the egg.