Existence is relative.
Scientists can tell a stars age by it's spectral output and relative size. Certain star sizes produce certain spectral signatures at certain ages in their life. Knowing this information, and the distance means we will know if it is there or not.
We usually see the end of larger stars in supernovas or smaller ones just sorta burning out.
Now here's something to really think about. Granted, we can calcuate the existence of something with repect to our inertial time reference... but that is like apples to oranges.
The mere fact that light & gravity are the energy transistion mediums with the fastest velocity means that seeing something is grounds for existence.
If existence is defined as something being present and detectable by any means... Then whether a visible star is there or not, it can physically effect us - to us, it exists. There are stars that exist in their own inertial time frame and not in ours - because if their light has not reached us and logically we cannot detect them by any "slower" medium... they do not exist.
Remember... time is relative to respective inertial frames. Something that exists must exist in time and be defined by time. Different inertial frames have different time, and thus different existences. - Think of it like watching a MLB game at a ballpark, everyone experiences the sounds of the game and thier neighbors at a different points in time, just in a different order. Everything in the universe will exist to each other... often just at different times.
So based on the facts... either everything exists, nothing exists, or only what effects us exists.
Originally posted by Lenny
We usually see the end of larger stars in supernovas or smaller ones just sorta burning out. Now here's something to really think about. Granted, we can calcuate the existence of something with repect to our inertial time reference... but that is like apples to oranges.
The mere fact that light & gravity are the energy transistion mediums with the fastest velocity means that seeing something is grounds for existence.
If existence is defined as something being present and detectable by any means... Then whether a visible star is there or not, it can physically effect us - to us, it exists. There are stars that exist in their own inertial time frame and not in ours - because if their light has not reached us and logically we cannot detect them by any "slower" medium... they do not exist.
Remember... time is relative to respective inertial frames. Something that exists must exist in time and be defined by time. Different inertial frames have different time, and thus different existences. - Think of it like watching a MLB game at a ballpark, everyone experiences the sounds of the game and thier neighbors at a different points in time, just in a different order. Everything in the universe will exist to each other... often just at different times.
So based on the facts... either everything exists, nothing exists, or only what effects us exists.




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