Humanity has always studied the universe, a pursuit that continues to this day. Answering questions about its structure keeps the scientific community engaged. However, one of the most recent questions has caused a stir due to certain conclusions: Is the universe infinite? There's still much to be explored.
The conceptualization of the universe has been achieved thanks to what has been observed from Earth. Based on different studies, it was always conceived that the observable universe was only a part of everything that it actually represents. In reality, beyond these limits, it continues to expand in space and time, so its borders do not seem to be established.
You might also be interested in our article: 3 universities around the world to study astronomy!
Infinite universe. What is known about it? The theory that was handled the most until now!
Everything we know today is part of the mechanics of the universe. Planets, systems, galaxies, stars, and more are all together in a single conglomeration known as the "universe."
In short, the universe encompasses all the matter and energy that is handled today. In other words, it is the totality, the beginning and the present of each aspect of which one is aware.
Source: Google
Since its study began to be explored in greater depth with modern technology, many mysteries have been unveiled. However, as soon as one of these is solved, another equally important question arises.
That is how the debate about the infinite universe arose, a premise that was little refuted. The observable horizon of the universe was known to be the entire possible field that could be identified from Earth. For this reason, beyond human understanding or visualization, space-time was still constantly expanding.
Therefore, it was concluded that the infinite universe was more than just a fact. Beyond the limits of the observable, there exists a tangible cosmos that continues to grow. Even after more than 13 billion years since its creation, spacetime remains in a constant state of expansion.
However, the infinite universe theory still has too many gaps that have not been fully filled. Even so, it is inferred that there is a cosmos beyond the observable because it is the perception seen from Earth. If the universe were observed from a more distant point, the identified regions would not be the same with respect to the blue planet.
But then... Is the universe infinite or what is observed is all that really exists?
As mentioned earlier, determining whether the universe is infinite is a matter fraught with scientific controversy. However, several facts have corroborated, though not conclusively, that the universe continues to expand infinitely.
One of these events is the movement or distance of galaxies with respect to the view from Earth. Previously, it was believed that this displacement was a consequence of the expansion of space towards something that attracted it. Therefore, the galaxies separated from their axis or central position, moving gradually.
Today, it is actually the space between galaxies that has been expanding. As a result, the distance between them is greater than originally observed. Essentially, their separation is now greater, giving the effect that they are moving.
The final conclusion on this premise is that the universe does not have an apparent center or epicenter. As space continues to expand, the perspective will be different from where it is observed.
For example, the universe observable from Earth will not be the same as the one viewed from a more distant galaxy. Why? Because the perspective will change, making the observable universe very different from that point.
Given these circumstances, thinking that it is the infinite universe seems correct. As it does not have a pre-established center, its limits are different depending on where the perspective is approached from.
In general terms, it cannot be ruled out that everything we observe is all that exists. However, it also cannot be stated definitively that more matter, space, and time exist beyond the event horizon of the universe.
Infinite or finite universe. Who is ahead in this important scientific race?
Source: Google
The infinite or finite universe is a contest that is gaining more and more strength to understand existence. Nothing has been said yet regarding this premise, but the questioning of an infinite universe is still on the rise.
The observable universe is categorized as a closed, balloon-shaped system. Beyond its boundaries, what happens is not fully understood; the only evidence is that space expands between galaxies.
Mainly, the problem to end the debate on the infinite or finite universe, is the distance at which the information is found. Everything that is beyond the observable horizon lies thousands of light years away, expanding at a speed greater than that of light.
In that sense, perceiving even a glimmer of a reliable signal, data, or information is virtually impossible. Anything beyond the event horizon is uncertain and can only be the subject of theories.
It all depends on the curvature
Various opinions suggest that the universe may have a positive curvature that would give it a spherical shape. If so, not only the observable universe would have that shape, but the entire cosmos in general.
With just a simple positive curvature, the universe would have no limits, but it would be closed in on itself. If you walk in a straight line forward or in any direction, you would always return to your starting point without encountering a boundary.
But, as long as a curvature in space is not known, the theory of the infinite universe continues to be the most successful. It also can't be ignored that space continues to expand, so it adds weight to the premise. The truth of the matter is that, infinite or not, the only really tangible thing is what is observed from the terrestrial perspective.
