The accelerating expanding universe

Wouldn't we have to know when the Universe were going to 'end', so to speak, before deciding whether or not our position in time is unique? Can we know if we're at the beginning, middle, or end without knowing the length of the line?Or... am I entirely misunderstanding the concepts in question? Jon

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Check out No webpage found at provided URL: Apollo's Temple!
Ignorance is temporary; you should be able to overcome it. - nwr

Okay, I think I understand that part; the time-window for life is relatively short and comparatively near the start time of the Universe, making it somewhat 'unique' or 'special'... yes? Suppose there were a way to enclose a biological system and allow it to continue to function perpetually without the input of external energy potential, would this system still be able to exist after the heat-death/cold-death, or does the fact that it was built of particles from the expanding Universe mean that it too will expand and undergo the heat-death/cold-death extinction? I mean, is the expansion happening at even the most minute level, such that even creating a biological system will be impossible after the heat-death/cold-death simply because the atomic structures required for such systems would no longer exist?Jon

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Check out No webpage found at provided URL: Apollo's Temple!
Ignorance is temporary; you should be able to overcome it. - nwr

Well, yes, and that was the point behind the system being able to continue existing without needing external energy. But let's not get tied up in my example.The point I was trying to get to was whether the heat-death/cold-death represents some change that prevents life from existing because there is no ability to transfer energy to that living system, or whether the physical properties of the post-death atoms themselves would make it impossible to construct, for example, a human bodynot necessarily because we couldn't energize it, but simply because the atoms needed to create it would no longer exist in the necessary form.Jon

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Check out No webpage found at provided URL: Apollo's Temple!
Ignorance is temporary; you should be able to overcome it. - nwr

Actually, cavediver most recently defended your statement which others had called meaningless; sure, he pointed out why he thought you were wrong, but he also indicated that your statement was meaningful and comprehensible.And please start using a double-return between your paragraphs; they're so much easier to read when separated.Jon

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Check out No webpage found at provided URL: Apollo's Temple!
Ignorance is temporary; you should be able to overcome it. - nwr

So is my body expanding presently? Are my atoms and the particles within them slowly moving farther apart such that my immortality is not even theoretically possible as my body is slowly ripped apart by the expansion forces of the Universe? Wait! So it's possible in a bubble? I looked up heat death, and it seems to only affect energy. But what about the expansion of matter?Jon

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Check out No webpage found at provided URL: Apollo's Temple!
Ignorance is temporary; you should be able to overcome it. - nwr