Can There Be Time Without Space? A Question for Discussion

AI Thread Summary
The discussion centers on whether time can exist without space, with participants noting that current scientific understanding suggests time and space are interdependent. Some argue that without space, events cannot occur, as energy and spatial configurations are essential for defining events. The conversation also touches on string theory, which posits that spacetime may not be fundamental, yet leads back to spacetime in certain contexts. Ultimately, the consensus is that the question is speculative and cannot be definitively answered with current scientific laws. The thread concludes with a note that it will be closed due to its speculative nature.
iDimension
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So we know that there can be no space without time but can there be time without space? I want to ask here because I don't trust yahoo answers :)

I put it in bold because I want to know if it's possible, not if it's likely or anything, just if it could be possible,

Thanks.
 
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Wikipedia gives the following broad definition for time.measure in which events can be ordered from the past through the present into the future.

Without space, more important without energy, what events could there be?
 
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anorlunda said:
Without space, more important without energy, what events could there be?

I like the possibly more pity "without time everything would happen at the same time, without space everything would happen at the same spot". :w Energy is a measure of the states that a system can reach in phase space, the configurations it (can) cycle through, so it may make sense without space.

If string theory is correct, spacetime drops out of its physics. The physics happens in a configuration space, but it _will_ lead to spacetime at places (because it did). My opinion would be that the question "there can be no space without time but can there be time without space" doesn't make much sense re the physics.
 
iDimension said:
So we know that there can be no space without time but can there be time without space? I want to ask here because I don't trust yahoo answers :)

I put it in bold because I want to know if it's possible, not if it's likely or anything, just if it could be possible,

This isn't something that can be answered by science since our understanding of time and space is that they don't exist separately. So under the current laws of science, no it isn't possible, but this doesn't exclude the possibility that our laws are not correct. Since we don't know if our laws are correct, and we don't know what future laws will be correct, there's simply no way to know.

Also, since this is a very speculative topic, I'm going to close this thread. If anyone has any comments or concerns about this decision you can contact myself or another mentor.
 
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Abstract The Event Horizon Telescope (EHT) has significantly advanced our ability to study black holes, achieving unprecedented spatial resolution and revealing horizon-scale structures. Notably, these observations feature a distinctive dark shadow—primarily arising from faint jet emissions—surrounded by a bright photon ring. Anticipated upgrades of the EHT promise substantial improvements in dynamic range, enabling deeper exploration of low-background regions, particularly the inner shadow...
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.

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