What is our universe fate? Well, there are several terrible ways the universe could end. On one end is gravity and the other end is dark energy, that mysterious repulsive force that is hypothesized to be behind the expansion of the universe. With this information let’s go to the scenarios:
1)๐๐๐๐ญ ๐๐๐๐ญ๐ก:-
Matter is dispersed around the universe as it expands, and its overall entropy increases as well. Eventually stars can’t form due to matter being too dispersed. Then the proton, one of the most fundamental building blocks of everything, decays after 10^40 years. Finally, the black hole, the last natrual complex structures in the universe, would decay in about a googol (10^100) years.
Eventually all processes that sustain entropy would fail. This is when heat death occurs. The universe has achieved a state of maximum entropy. Estimates of eventual heat death range from the somewhat lazy answer of 10^100 years to 10^10^120 years, which is even more than a googolplex.
๐) ๐๐ข๐ ๐๐ซ๐ฎ๐ง๐๐ก:-
The Big Crunch is basically when the see-saw is tipped towards gravity and dark energy somehow runs out. Many scientists don’t think this is going to happen anymore.
Basically the Big Crunch is just the Big Bang but in reverse. The universe contracts insteads of expands and gets hotter instead of cooler. Soon the stars themselves burn away from the temperature outside than inside, while atoms break down into their fundamental parts.
Eventually all of the black holes join together to form a new black hole that would contain the universe; the Big Bang singularity. Then hopefully it can ‘bounce’ back again as a cyclical model.
This could start happening anytime . However, it should probably start, if it will start, trillions of years from now, as the universe is now accelerating in expansion. This probably means that the universe won’t contract any time soon. However if the curvature of the universe is closed it’s likely that it’s going to contract anyways.
๐) ๐๐ข๐ ๐๐ข๐ฉ:-
This is when the See-Saw is tipped the other way towards dark energy. What results is dark energy superseding everything, even gravitationally bound objects. This is expressed in an exponentially increasing rate of expansion. Eventually even atoms themselves would be forced to ‘rip’ apart because of dark energy.
The authors of the study that formed this hypothesis, led by Robert Caldwell of Dartmouth College, have estimated that this would probably happen in 22 billion years. The first signs would be shown 65 million years before atoms rip, so, no need to be scared.
The book Last Contact by Stephen Baxter gives an account as to what people on Earth would probably feel like should an event like this happening.
๐) ๐ ๐๐ฅ๐ฌ๐ ๐ฏ๐๐๐ฎ๐ฎ๐ฆ ๐ฆ๐๐ญ๐๐ฌ๐ญ๐๐๐ข๐ฅ๐ข๐ญ๐ฒ ๐๐ฏ๐๐ง๐ญ:-
We’re moving away from the See-Saw now into what I think is the most terrifying scenario on this list. Why? Because it can literally happen without warning right now. You wouldn’t see it coming. One moment you are reading this and the rest you are dead.
๐๐จ๐ฐ ๐๐๐ง ๐ฌ๐ฎ๐๐ก ๐๐ง ๐๐ฏ๐๐ง๐ญ ๐ก๐๐ฉ๐ฉ๐๐ง?
All particles are made of energy states, all wanting to drop to its lowest state known as the ground state. Given the chance these particles will drop to the ground state. And while it might seem the universe, with its uniformity and stableness, is at its ground state, there’s also possibility that it isn’t. If it isn’t, well, we’re screwed.
Given a trigger event, most likely quantum tunnelling, a bubble of ground-state universe; the ‘true vacuum’, would start expanding at the speed of light to swallow up our current universe; the ‘false vacuum’. As it’s expanding at the speed of light, which is the fastest thing in the universe, we would never see it coming.
And can we survive? Well, it’s very likely that inside this ground-state universe, science as we know it would change so much that the universe would be TOTALLY UNINHABITABLE. Plus, all particles would behave differently in this ground-state universe. It would be the end of physics and chemistry as we know it.
5) ๐๐ก๐ ๐๐ข๐ ๐๐จ๐ฎ๐ง๐๐:-
As you know at the time of big bang, all the matter and energy of the was concentrated at a single point (singularity) . At this state the universe was highly dense and hot. After the big bang the universe started to expand and cool down.
If we consider big bang to be an explosion and the expansion of the universe to be the trajectory due to the explosion. As the expansion continues a point will come when the whole energy responsible for this expansion becomes zero. The universe will no longer expand. On contrary, it will start contracting due to the gravitational pull of the objects in the universe on each other. Eventually all the matter will get concentrated at a single point just like the singularity at the time of big bang. The condition of the universe will be similar to that at the big bang. This conditions can also lead to another big bang. This cycle will continue. This is known as The Big Bounce.
......๐๐ก๐ข๐ฅ๐ ๐ญ๐ก๐ ๐ฎ๐ง๐ข๐ฏ๐๐ซ๐ฌ๐ ๐ฐ๐ข๐ฅ๐ฅ ๐๐ฏ๐๐ง๐ญ๐ฎ๐๐ฅ๐ฅ๐ฒ ๐ฆ๐๐๐ญ ๐ข๐ญ'๐ฌ ๐๐๐ญ๐ ๐จ๐ง๐ ๐๐๐ฒ, ๐ฒ๐จ๐ฎ ๐๐จ๐ง'๐ญ ๐ง๐๐๐ ๐ญ๐จ ๐ฐ๐จ๐ซ๐ซ๐ฒ ๐๐๐จ๐ฎ๐ญ ๐ข๐ญ, ๐๐๐๐๐ฎ๐ฌ๐ ๐ฒ๐จ๐ฎ ๐ฐ๐ข๐ฅ๐ฅ ๐ง๐จ๐ญ ๐๐ ๐ญ๐ก๐๐ซ๐ ๐ญ๐จ ๐ฌ๐๐ฒ ๐ญ๐ก๐๐ญ "๐๐ญ ๐ฐ๐๐ฌ ๐ง๐ข๐๐ ๐ฆ๐๐๐ญ๐ข๐ง๐ ๐ฒ๐จ๐ฎ ๐๐ฅ๐ฅ!!"
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