I believe in an infinite volume of space characterised by vacuum energy, where an infinite number of universes can spring into existence, and matter can rise from seemingly „nothing” rooted in symmetry-breaking quantum fluctuations.

I think, what we perceive as „our universe” is a tiny part of the Universe in general, because many Bangs happened and „universes” existed merging from the very „beginning”. The universe is not just bigger than what we can observe, it is truly infinite. Bangs are happening everywhere and all the time because the volume of space is infinite. The empty volume of space necessary for a Bang to happen has a finite constant value. There are three main possibilities according to this line of thought:
1. Vacuum energy collapsing into itself sparking a Bang (resulting in a „universe” with the same laws and constants which are identical everywhere in the infinity of the cosmos).
2. A black hole
3. Nothing (if the volume of the space needed for a Bang is not truly empty – matter disturbs the behavior of vacuum energy)

„Our” universe was born by the collapse of vacuum energy. The future of the universe is reduced to the evaporation of matter, leaving behind only vacuum energy. It is like a perpetual cycle: everything appeared from nothing, and becomes nothing. If the empty volume necessary for a Bang is optimal (and there is no matter), a new Bang could take place (strictly if the respective region in space is devoid of matter). The empty volume necessary for a Bang is also conditioned by the proximity of parallel universes, which by expansion can cancel the space necessary for a Bang. Due to vacuum energy, quantum fluctuations and symmetry breaking can occur at the micro level, states that can become quite energetic, thus resulting in the appearance of matter. For this reason, there is also matter in the universe, not just energy.

You can’t „trick” the infinite universe, but keep in mind the uniqueness of „you” here and now, cause for sure you are not going to exist in this same spatial and temporal coordinates ever. I mean this is what comes to my mind right now, but I could be wrong?I don’t think that spacetime is expanding. I think distances become bigger due to the rotation of the universe, where the centrifugal force is pushing everything outward. In space there is no friction. This also explains why the universe is flat (it is aligning everything on the same plane). The universe is also expanding because of the inertia stemming right from the Big Bang. I think that at a specific moment the centrifugal force will be balanced by the gravity of the universe, becoming stable and rotating locally., unless „disturbed” by the gravity of a nearby universe.

If the universe if infinite, one could ask: „why is the night sky not full of light?”. The answer lies in the fact that light loses its intensity with distance. There are an infinite number of stars and galaxies, but they are so far away that they won’t be seen ever. Another point is the fact that galaxies are moving away from each other with a speed that goes beyond the speed of light, so light can’t keep up with the drifting of stars and galaxies.

Rotation is what keeps the universe together, from particles to star systems, galaxies, and even the entire universe.

Future of the Universe: the centrifugal force (due to rotation) will eventually balance out with gravity and rotate forever, until „disturbed” by merging with a nearby universe. Although I think all universes will keep rotating „locally”, they are not moving around, unless influenced by a nearby universe’s gravity.

You can never reach the edge of our Universe, because it is expanding faster than the speed of light.

Even if the universe is infinite, there will be fewer and fewer stars on the night sky, because the universe is expanding faster than the speed of light, so the light won’t catch up with the drifting of stars. The only way there will be more stars is if our universe were to merge with another nearby universe.
Note: most of the stars we see are within our Milky Way Galaxy. They say that our Galaxy will merge with Andromeda Galaxy, so there will be indeed more stars, but on the long term, there will be fewer stars.

Even if the universe is infinite, life is finite, and we will all „experience” death on a personal level. It is a certainty we are all aware of, yet we waste it on hatred. It doesn’t make sense. I would understand this paradox (to a certain degree) if we were immortal, but so far, it is impossible to reverse the process of aging.

You can never stay still in a single point in space; you are always moving, due to inertia and gravity.

If you think you „tricked” the universe by spontaneously doing something random, in an infinite universe there an infinite versions of you doing the exact same thing.

In an infinite universe, you could meet yourself.

If you were to travel from Andromeda to the Milky Way slightly below the speed of light and look towards Earth, you would witness the entire history of planet Earth in „fast forward” (centuries in minutes), due to time dilation.

The universe represents a „cosmic dance” between gravity and inertia – due to the impulse stemming from the Big Bang and the rotation of the universe, which comes with a centrifugal force, both driving expansion by default (there is no need for a „mysterious dark energy”).

If you were to „step out” of the universe, you would see its entire timeline (chronoverse), both future and past. Maybe existence is predetermined? I mean, for a specific reality? If the universe is truly infinite, predetermination loses its sense; not just identical realities would exist, but all other alternative realities as well (all outcomes and possibilities are infinite as well in this regard, although I think they repeat themselves too).

The universe is flat:
– It is rotating and due to the centrifugal force, everything is aligned on the same plane
The universe is expanding:
– Due to the initial inertia from the Big Bang
– Due to the centrifugal force
Why is the expansion accelerated?
– I don’t know, but maybe we are in a region where the centrifugal force is still high enough to cause acceleration (this is speculative). After all, there is no friction in a vacuum, and everything travels with the initial speed or with a uniform acceleration in gravitational fields, which still means a state of equilibrium (if this is related to the previous arguments? I don’t know!).
Maybe this theory eliminates the need for accepting this so-called „dark energy”. I don’t think that the „fabric of spacetime” is „stretching” or expanding; I think distances are becoming bigger in a vacuum, where there is no friction. Due to inertia, galaxies are moving away from each other; there is no need to call on a „mysterious dark energy”.
If you were standing at the edge of the universe, due to its rapid expansion, you would need Earth-centuries to pass, in order to witness a second go by on Earth itself.
Since the universe is expanding at a speed that goes beyond the speed of light (if true?), we all might exist in a cosmic time dilation. What would this mean for us? I don’t really know, but for sure, time for the universe itself is „ticking” differently than the time we humans perceive, even excluding Earth-time (Earth’s rotation around its own axis, its rotation around the Sun, and time dilation due to its gravity). A second for us means Earth-centuries for the universe.
Somebody asked if time has „speed”? Although the universe exists in a constant present (no past, no future – it is infinite and has no consciousness – no memory). The flow of time is relative to perception, gravity, and speed. We assign change (in general) and movement through space a temporal dimension to make sense of reality from our human perspective, because we have memory (although not just human beings have memory, other living beings have memory too, but they might perceive the passage of time differently – think of it as an altered human consciousness).
I was thinking! If you travel from the Milky Way to Andromeda at the speed of light, due to time dilation, for you, your time is like nothing (not even a second), and you are already there, just like for a photon. Excluding the acceleration and deceleration part *I am feeling a bit confused* From your perspective, it would be like teleportation.
Later edit: I think I am wrong because there is something with mass. A photon is massless, while a spaceship and humans have mass. I don’t know what to say. I am tired right now! Time dilation is messing with my mind because, in my vision, time doesn’t exist; I consider that we live in a continuous present.
Edit: I think it is possible for a human being to travel at high speeds, slightly below the speed of light, but the acceleration and deceleration need to be uniform.
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