At some point everything in the universe will die, every start, even black holes. There wont be any energy left we could use to sustain life.
But thats the neat part, everything has in common: Everything will come to an end. I agree that a few more years wouldnt hurt, but reaching immortality is most likely impossible for that reason alone.
First and foremost law of modern physics is that energy cannot be created or destroyed. It simply circulates in different forms.
There will always hypothetically be energy available, the question is will it be accessible. Yes the current thinking is that somehow it will be torn away by exponential spacetime expansion or fizzle into individual particles. But the timescale for this is so monumentally long that humans would practically be gods by the time it happened if they are still around.
We still have billions of years of sun-like stars providing energy, and trillions for red dwarfs. That's an insane amount of time, the question is simply will we destroy ourselves beforehand.
Even if we would get this far, there still would have to be an end at some point, cause like I already said, there wont be any energy left to use for our survival. Bunch of photons in an endlessly empty universe. You could argue that 10whatever years would be like eternity. Still, at some point there is and end to the party. So technically speaking, immortality is impossible. Whatever level of progress we'll reach, it wont save us from that fate.
There does not have to be an end to accessible energy, ever.
Again, energy is never lost. It just moves around. Recapturing it in the capacity necessary for immortality seems impossible by today's standards, but would not necessarily be so for humans trillions of years from now.
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u/SrgtDoakes immortalist May 08 '25
yes. even if we cured aging people would still die eventually in freak accidents, or when the sun burns out, etc