Everything is at the same "time" everywhere, which is "now", and there are no bubbles. The only differences is in the images of events being transfered to each respective position, or is only in what is being seen by them, which is just a little bit older than when those events are actually happening and/or are occurring, etc.
The hear and now incorporates distance of time like if I'm 55 and sitting next to me is someone who is 65 we are not the same age the distance of time is different in the hear and now time. But each distance of time in each bubble does interact simultaneously in a time bubble everywhere in the universe bubble. Earth resides in second hands of a huge clock.
If your 55 and are sitting next to someone who is 65, you are each in your respective "now", and are at the same "time", or are existing at the same "age" in the universe, etc. But the only difference would be that when you are looking at them, you are seeing them a little bit older than what they actually are due to the amount of time is takes for the images of them or where they are at to reach your eyes, and that is the only difference, and that is only because of the amount of time it takes for light from them to get to where you are at, or reach your eyes, etc.
Yes respective is the distance traveled time lived etc.
Now is always where you at and never changes anywhere. Even when, or if, no matter how slow or fast you were able to travel there or go there or get there or send something there, etc, now is still the same and never changes regardless of anything in the universe ever, anywhere, etc.
The now has already changed before you have a chance to realize the now has changed. If the sun suddenly right now turned off because of distance it would take 8 minutes for you to realize what happened in the now 8 minutes ago.
Both you and the sun are at now regardless of the images, and that never changes.
Nope right now the sun could turn off though it's off the light from the once before turned on light is still reaching your eyes. And you don't have a clue it already turned off 8 minutes ago. Unless you can be in two places at the same time, time is always a factor.
Regardless of whether you have a clue or not, everything in the universe is always at the same now, which is also always at the same universal age, and that never changes, etc, regardless of the images, or your being able to travel though the universe, or send messages or whatever, in an instant, etc.
Stars that can be seen from the past no longer exist in the now, only the remnant light from the once active star is reaching earth. Our star and those preexisting stars aren't the same age.
They existed at the same universal time/age, regardless if they burned out, and their light is still traveling to us/other places still, etc.
Should their photons that they were emitting still not be traveling, or should they cease to exist when their sources die out, etc?
Speed of an object (or person, place, or thing) can slow the rate of it's own individual time, and so can being very, very close to a strong gravitational pull, or well, etc, but doesn't change either the flow rate of time, or time itself for anything else ever at all ever, etc, and those are the only two things that can ever change the individual flow rate of time for anything ever at all ever, etc, but doesn't ever change a thing for anything else, etc.
We are talking about the concept of time ... not atoms.
In order for that to happen both the old star and the current star would have to exist in the same time bubble. But the old star burnt out before the new star was formed in reality. So there can't be universal age with non existing objects.
Because of shear distance the traveling photons from the source exist but the source is gone and no more photons are starting the journey from the source. Only those that are traveling away from the non existent source. Like when parents die they are no longer living in a universal age with their children.
If something doesn't exist there is no universal time associated with it. It has to exist first to part of time.
