Why didn't the universe always exist? Because since God is supposed to be outside of time and is supposed to have always existed, then how could God have used a point in time to start creation? Any thoughts on this?
By the evidence our universe may or may not have always existed, but the Quantum World where the singularity existed that expanded to form our universe has no known beginning or possible end or limits beyond our universe
The current view i Physics ad cosmology is our universe is boundless according to the Hawking-Hartle theory:
Origin of the universe: This article explores various theories about how the universe got started and how it will end.
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The Boundless Universe theory, developed by Stephen Hawking and Jim Hartle, suggests that the universe has no boundaries. The theory states that a surface without corners or sides, like a sphere, has no defined end and can therefore be considered boundless. This would mean that the universe is infinitely large, and the observable universe is only a small fraction of the whole.
Roger Penrose theory of a Cyclic Universe
The mysteries of the universe have captivated us for centuries, inspiring scientists, philosophers, and poets alike. From the depths of space to the smallest subatomic particles, we continue to uncover secrets that challenge our understanding of reality.
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British mathematical physicist Roger Penrose's theory of conformal cyclic cosmology (CCC) proposes that the universe is part of an infinite sequence of universes that emerge over vast periods of time, each resulting in a new Big Bang. Penrose suggests that the universe is an extended conformal manifold, made up of a succession of eons, each of which gives rise to a complete history of an expanding universe. He claims that there is evidence of a remnant from a previous cycle.
Other universe theories do not consider our physical existence to have a beginning or an end:
Other theories related to the universe include:
- Infinite Universe Theory
This theory suggests that if a spaceship were to travel to the edge of the universe, it would continue to fly past planets, moons, suns, and black holes forever.
- Multiverse Theory
This theory suggests that our universe may be just one of many in a larger "multiverse", with each universe having its own distinct characteristics, physical laws, and constants.
- Big Bounce Theory
This theory suggests that the universe could collapse back to its beginning state and then initiate another Big Bang, allowing the universe to last forever.