There are five hypotheses about the ultimate fate of the universe, which one is more reliable?

I think the second hypothesis is more reliable, many scientists believe that the expansion of the universe does not last forever, but gradually changes to other forces over time, and if it starts to provide the corresponding gravitational force, then the universe will collapse and the universe will begin to circulate.

The exploration of dark energy is more reliable, because dark energy is extremely important for the future development of our universe, and only when we truly understand the structure of the universe and the theory of dark energy will we get further exploration results.

The most reliable I think is that there is dark energy in the universe, and now the universe is still expanding, mainly due to dark energy.

I think it is because there is a dark amount in the universe, and now the universe is still shrinking inexhaustibly, mainly because of the dark amount.

According to the current mainstream theory of the international scientific community, the universe originated from a large ** starting from a singularity at a time. And it is still in the process of expansion (this is supported by observations).Since it is in the process of expansion, of course, it is bounded.

The universe has been introduced by various theories to vary slightly in size, with estimates ranging from 128 to 18 billion light-years in radius. It is generally estimated that the radius of our universe is about 15 billion light-years. But in short, it is limited.

As for the ultimate fate of the universe, according to the currently mastered theories. There are three possible outcomes for the universe to evolve and change to the end: collapse, eternal expansion, and equilibrium.

It depends on the contest between the gravitational force and the great inertia of all matter in the universe. Because the inertia of the big ** makes the universe expand. And the gravitational pull between all the stars seeks to shrink the universe.

The outcome of these two forces will determine the final outcome of the universe.

1) If there is a moment of residual inertia that cannot resist the gravitational pull of matter in the universe, then the universe begins to shrink under the action of gravity. Finally retract the singularity.

2) If the gravitational pull of matter can never resist the residual inertia of the great **. The universe will expand forever.

3) These two forces finally "just right" balance each other. The universe will enter a very slow and never-ending process of gradual and slow expansion.

These three endings have been named "Closed Universe Model", "Open Universe Model" and "Balanced Universe Model" by cosmologists, respectively

Before the universe perished, these five theories were all reliable, because these five hypotheses have a certain scientific basis and theoretical support, and I personally prefer the big tear theory.

There are five hypotheses for the ultimate fate of the universe, but many people are more inclined to the big **, after the collision of matter in the universe, **, and then the speed will be huge**, and a new state of the universe will be formed.

When it comes to hypotheses, this is the rigorous side of science, and none of them have yet to be confirmed. The most reliable and popular one is the theory of big extrusion, big ** cycle, big tear heat death.

There are five hypotheses for the ultimate destiny of the universe, one of which is that the universe has a beginning, and I think this is reliable, everything has a starting point, even if it is a mysterious thing like the universe, there must be a starting point.