Is the Instantaneous Expansion of Space-Time Possible?

In summary, the conversation discusses the concept of expansion taking place in "nothing" and how this can be misleading. They also touch on the idea of all space-time existing all of the time and the ultimate fate of the universe collapsing back in upon itself. The question is raised about whether a singularity of space-time would occur instantaneously and whether this would affect the flow of time for observers. However, the conversation is deemed too vague and inaccurate to be answerable and the thread is ultimately closed.
  • #1
StuartL
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Given that the expansion takes place "in nothing".

Given that all space-time exists all of the time. (past/present/future)

If the ultimate fate of the Universe is that it collapses back in upon itself.

Shouldn't a singularity of space-time occur instantaneously?

After all, all time existed in the "first instant" too.

Would this not then produce a singularity of space-time, within which the flow of time is specific to the "observer"?
 
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  • #2
Hello and :welcome: !

StuartL said:
Given that the expansion takes place "in nothing".
This is already confusing, as you probably associate empty space with that "nothing". There is no nothing.
Given that all space-time exists all of the time. (past/present/future)
Again misleading. It is as if you said: Given that all volume exists all of the length. (?)
If the ultimate fate of the Universe is that it collapses back in upon itself.
If ... then ...?
Shouldn't a singularity of space-time occur instantaneously?
Apart from the fact that these terms don't make sense in this ordering, who said it didn't (for whatever you meant)?
After all, all time existed in the "first instant" too.
Recursion. "first instance" already requires time.
Would this not then produce a singularity of space-time, within which the flow of time is specific to the "observer"?
I'm afraid your question is too vague and inaccurate to be answerable. You should read a book on special relativity before you start to "philosophy" about singularities. You could also do a forum search for "shape of the universe" or similar to find what already has been said on PF.

As this thread lacks a reasonable base, it is closed.
 
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1. What is the concept of instantaneous expansion of space-time?

The instantaneous expansion of space-time refers to the idea that the fabric of space and time can expand at an infinitely fast rate, allowing objects to move apart from each other at speeds greater than the speed of light.

2. Is the instantaneous expansion of space-time possible according to current scientific theories?

According to current scientific theories, the instantaneous expansion of space-time is not possible. The theory of relativity, which has been extensively tested and proven, states that the speed of light is the maximum speed at which any object can travel. Therefore, the concept of instantaneous expansion of space-time goes against this fundamental principle.

3. Can the expansion of the universe be considered as an example of instantaneous expansion of space-time?

No, the expansion of the universe is not an example of instantaneous expansion of space-time. The expansion of the universe is a gradual process that takes place over billions of years, and it does not violate the speed of light limit.

4. Are there any theories or hypotheses that propose the possibility of instantaneous expansion of space-time?

There are some theories and hypotheses that propose the possibility of instantaneous expansion of space-time, such as the theory of cosmic inflation. However, these theories are still highly speculative and require further evidence and testing to be accepted by the scientific community.

5. What are the potential consequences if the instantaneous expansion of space-time is proven to be possible?

If the instantaneous expansion of space-time is proven to be possible, it would completely revolutionize our understanding of the universe. It would challenge the fundamental principles of physics and open up new possibilities for space travel and exploration. However, it would also require significant revisions to our current theories and models of the universe.

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