What is the true nature of Space and the Universe?

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SUMMARY

The discussion centers on the nature of "Space" and the "Universe," highlighting the complexities surrounding their definitions and origins. Participants reference concepts such as relativity, quantum physics, and string theory, emphasizing that while the Universe encompasses all existence with its dimensionalities, the fundamental nature of space remains uncertain. It is acknowledged that space is not truly empty, as it contains gravity, light, and radiation fields, yet a definitive answer about its composition is still elusive.

PREREQUISITES
  • Understanding of relativity and its implications on space-time.
  • Basic knowledge of quantum physics and its principles.
  • Familiarity with string theory and its theoretical frameworks.
  • Awareness of metaphysical concepts related to the nature of existence.
NEXT STEPS
  • Research the implications of Einstein's theory of relativity on our understanding of space-time.
  • Explore quantum field theory and its relation to the fabric of the Universe.
  • Investigate string theory and its propositions regarding fundamental particles and dimensions.
  • Examine philosophical perspectives on the nature of space and existence.
USEFUL FOR

Anyone interested in cosmology, physicists, philosophers, and students exploring the fundamental questions of existence and the nature of the Universe.

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What is actually "Space"?

Sorry if you think that this is the most stupid question around, but i think its the most obvious!

What is actually this "Space" and "Universe"?

I know relativity, quantum physics, big bang , string theory etc.etc... but really this question got me!
From where is this "Space" came? I hope that u can get me, i mean i don't want a basic definition like "Space is Empty space!" , what i want is the answer to the question that " what made them and what are they in real sense".
 
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Good question. No simple or complete answer though. The Universe is all of existence. It is characterized by certain dimensionalities...one dimension being a one-way timeline and three dimensions of space about which matter and energy can move. Space and Time are the fabric of the Universe. But it is not really known what those dimensions are "made of". Perhaps there is some fundamental particle or string or something we can point to. But for now, it's still a big uncertainty.
 
Space reply

I may not understand your question completely so forgive me if this is "off topic." I presume that you are asking what is the ether or the empty (only a few atoms per cubic kilometers) regions inside our expanding (we assume) universe. "beyond the shell of the universe, is the realm of the unknowable (for those not "religious").

We all know that space isn't empty, there is no proof of what space is but if you like I could tell you what I think it is. Be aware that it is in the realm of the "metaphysical" with a dash of basic Quantum theory thrown in. I will continue you would like?
 
I agree that space is not empty. We know that gravity, light, radiatation fields, exist in space, but as Phobos said, a complete answer to what space is has not been arrived at yet.
 

Thread 'Galaxy MoM-z14 - furthest observed object'

https://en.wikipedia.org/wiki/MoM-z14 Any photon with energy above 24.6 eV is going to ionize any atom. K, L X-rays would certainly ionize atoms. https://www.scientificamerican.com/article/whats-the-most-distant-galaxy/ The James Webb Space Telescope has found the most distant galaxy ever seen, at the dawn of the cosmos. Again. https://www.skyatnightmagazine.com/news/webb-mom-z14 A Cosmic Miracle: A Remarkably Luminous Galaxy at zspec = 14.44 Confirmed with JWST...
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