Could an advanced alien race prevent the death of the universe?
We all know that the universe is going to die one day: all the stars will die, all the black holes will evaporate and life will be gone. But hypothetically speaking, if a super advanced alien race (let's say a few billion years more advanced than us) wanted to prevent this from happening, and protect all life within the universe, would they be able to do it? Or is the death of the universe inevitable and it doesn't matter how advanced you are?
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This is a very deep question and from a formal scientific basis we indeed do not have adequate information to formulate an answer.
However the Hindu philosophy (and some others) instructs us that there are various 'levels' of creation that encompass the respective level below.
The Hindu philosophy (perhaps others, I have not had occasion to investigate) also tells that at certain periods there are 'Lesser Dissolutions' and 'Greater Dissolutions' that are used to reset the levels below a certain point.
Various mystics have described these things in times past and some a bit more contemporaneously.
The time frames are long, it seems some of them are of the same order as the age of the known universe, it makes one think a bit.
Perhaps the 'Lesser Dissolution' corresponds to what we in science expect to happen to the known universe at the time of the 'Big Crunch' and this is cyclic and part of the philosophy.
While all of this is diverting the telling point is that the souls that have reached a level that is not subject to that turn of dissolution will persist while all the souls in lower levels are in essence 'reset' and have to start their path to god realisation anew (sort of like stage extras in the play of life that are just there to help the main cast) from single cellular organisms over millennia until they incarnate into self aware beings and can strive to reach the higher levels. For this reason the Hindu philosophy places a fair amount of emphasis on spiritual advancement to achieve access to those levels that are safe from the Dissolution.
So in essence the aliens are the denizens of the higher levels and their emissaries, the various Masters, who come to visit and the technique they use to avoid the heat death of the universe is to maintain a backup copy of their soul in a fire proof safe, knowing when the fire is coming. The Masters trying to get us mere mortals to also try to prepare a backup.
Granted this is not a scientific answer unless one delves into the 'Science of the Soul' movement but is could make for a great storyline that can cover the life of a universe and still have observers.
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Going a bit more out there, say the aliens have discovered undeniable proof that the simulation theory is actually true.
And they have figured out how to get access to some of the API from inside the simulation.
They can't get out, because you have to have a body to exist on the outside, but they do have a bit of control over the default parameters, so long as they don't do something really crazy and draw attention to the fact that they've figured it out, they can tweak things in small ways.
Like change the rate of universe decay from 1 to -1, so that the universe starts getting younger instead of older.
They just have to remember to switch it back every few billion years so that the universe doesn't get too young and hot.
Edit:
All this depends on the point of the simulation being to study life, not the universe.
Another fun possibility that it allows is for the creator(s) to be able to take up an avatar in the simulation, which could lead to things like the greek gods.
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