If you just list all the films that tell how the end of the world will happen, the scenarios of which are inspired by the fantasy of the scriptwriters, flavored with the findings of the directors, skillfully filmed by cameramen and saturated with effects due to computer graphics, then it can take quite a long time. But all of these cinematic options have nothing to do with possible reality. No talented but "pushed" scientist, no super laboratory, no almighty Pentagon can stop what might actually happen. No one will even understand what happened. If the universe dies, then this end will take a moment.
Reasonable destruction
If a hundred years ago someone had suggested that with just one bomb it would be possible to wipe out a large city from the face of the earth, such a seer would have been laughed at at best. But several decades passed, and August 1945 came. And on the sixth, only one nuclear bomb turned Hiroshima into ruins.
This was the first meeting of humanity with such a destructive force. The concept soon emerged in academia. It was called "intelligent destruction." Proponents of the concept arguably prove that people will someday put an end to the existence of the universe. They will come up with such a weapon that will turn all these constellations, galaxies and everything else into nothing.
Fairy tales? Fruit of a sick imagination? Then such a fact. At present, the world has accumulated so many nuclear and thermonuclear charges to turn our planet into fragments. And then in orbit the earth will fly numerous asteroids, as well as between the orbits of Mars and Jupiter. But will we earthlings be allowed to do this? Or another question. Where is the guarantee that someone else will not do this? After all, there is no evidence that intelligent life exists only on Earth.
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End of the game
One of the latest hypotheses, going beyond the usual notions, suggests that our real world is in fact a virtuality. That is, everything around us, like ourselves, is just the result of a computer program.
This theory is held by the philosopher from Oxford Nick Bostrom. He is sure that sooner or later the computer will become so perfect, and programmers will achieve such abilities that simulated virtual worlds will cease to be fantasy. This means that it is quite possible that someone who has already reached this level could have created such a program long ago, of which people are particles. And this someone, at one fine moment, can simply stop the work of his computer, and then humanity will cease to exist, because the virtual universe will disappear.
Breaking the foundations
There are many hypotheses that substantiate the existence of the universe. One of them proves that this existence is based on such constants as the mass of a proton and the speed of light. Provided that the meaning of any of them was different, our world simply would not exist.
According to Australian scientists, the permanent meaning of fine structures has changed since the Big Bang. Can other constants change? Why not? If this happens, then the universe simply will not exist. It will disintegrate into many constants. Planets, stars, galaxies, space itself will disappear. However, this, as the hypothesis says, could happen in three billion years.
Collision with another universe
Our universe is finite. Somewhere its border is located. What's behind her? Maybe universes too, only different?
There is a theory that there are many universes. Shouldn't they be allowed to collide? What if this has already happened, and this is what explains the curvature of our universe? If so, the next such collision could result in disaster. It is possible that other universes exist on the basis of other physical laws. Collision possible at near light speed.
Big compression
The Big Bang is estimated to have occurred 13.8 billion years ago. Since then, our universe has continued to expand. There are two hypotheses.
One speaks about the infinity of the universe, the second - about its boundaries. If they exist, then when the expansion reaches its limit, compression will begin. He also has a limit. This is the end point. What's next? Probably another big bang. By the way, the theory of relativity developed by Einstein allows a lot of compression. True, this is far from it.
Oscillating Universe
And so, the universe appeared after the big bang. A point (singularity) became its place. And what caused her appearance? There is such a term "Oscillating Universe".
This hypothesis is based on a theory that suggests that in the beginning there was a collapse of a certain universe, that is, its compression to a point, then a big bang followed, in which our world appeared. Is it so? No answer. If so, then it is not known what were the accounts of these compression and explosion: the fifth, millionth, multibillion.
Death barrier
When will the expansion of the universe stop, where and when will this process end? Here, as with a huge pool, which is flooded with water. Whatever area it has, the moment will come when the water reaches its walls. Perhaps the comparison is not so good.
But still, calculations show that there are 3.7 billion years before the completion of the expansion. However, the existence of such a limit is estimated at fifty percent.
Great absorption
The existence of the Higgs boson was confirmed by experiments at the Hadron Collider on July 4, 2012. The boson is also called the Higgs field. The universe is literally permeated with it. In this case, the field can be in different states. Like any substance, there are three of these states: solid, liquid, gaseous.
This field, like any other, has different states of energy levels. This level is currently low. Can he change? Of course, the level can rise or fall. The latter is highly probable. A decrease can be caused by a quantum fluctuation. The low-power field then becomes like a bubble, expanding at the speed of light and absorbing everything it encounters.
Of course, the universe will also be swallowed up. Bad end. However, in this case, there are two advantages. The first is very far from such an event (billions of Earth years), the second - the process will take such a short period of time that no one will understand that this is the end.
Big freezing
Heat death, based on the second law of thermodynamics, has been talked about for a long time. The bottom line is that when the universe expands, each object scatter.
Since the second law of thermodynamics says that entropy in systems with boundaries increases, the level of entropy will reach its maximum value. In this case, due to the uniform distribution of energy, its level will reach such a small value that any processes will stop. The result - the temperature of the stars will reach absolute zero, the matter will turn into nothing.
Big gap
Very little is known about dark matter and the same energy. At the same time, it was found that the universe consists of 68.3 percent of it. Until this matter was discovered, it was recognized that the universe, which was expanding rapidly after the Big Bang, either stopped expanding, or it is now proceeding much more slowly.
The appearance of supernovae is accompanied by processes that allow us to conclude that the expansion is accelerating. The fault is precisely dark matter and the same energy. This matter is capable of influencing events in such a way that, in the end, a big rip will occur.
Such a forecast, suggesting one of the options in which the universe will perish, is based on assumptions that the power of dark energy is increasing. It is increasingly separating galaxies, tearing apart that which binds objects. In the end, it will come to the point that the universe will simply turn into a suspension of the smallest particles, which are no longer able to further divide into components. One thing calms down - the earth, together with everyone who inhabits it, will cease to exist much earlier.