Discussion How do you think the universe was created

[DarkRange55]

I have a thought experiment regarding the infinity of the universe.

We see galaxies in all directions and we can see very young galaxies - they are the most distant ones bc we look back in time. The universe doesn't "end" behind those most distant galaxies in the direction we are looking. Those galaxies also evolved similarly to our galaxy and all other galaxies. Now, if we assume in one of those distant galaxies there's also an observer he would also see a universe in all directions like we do but he would see parts of the universe which we can never reach (see) due to the expansion. I hope that explains my thoughts in a way that can be understood.

If the universe is infinite then each point within the universe is the center of it.

Yes.



The fact that the universe is expanding is a strange concept because what is it expanding into? However, I think that physicists do a disservice by saying that the universe is expanding, its more about the metric is changing.
Space-time itself is expanding relative to the speed of light and to all of our measurement systems, but that does not require anything for it to expand into. Assuming that space-time is expanding is a simpler way to look at it than to assume that all of our metrics are contracting, but there is no way to tell the difference.

"The universe is everything, so it isn't expanding into anything. It's just expanding. All of the galaxies in the universe are moving away from each other, and every region of space is being stretched, but there's no center they're expanding from and no outer edge to expand into anything else." (Ashley Hamer, 2019)

 

[Darkover]

either once upon a time something came into existence from nothing essentially turning itself on or there has always been something that existed that complete nothingness is impossible

This is a long-standing philosophical question that has been debated by thinkers for centuries. There are a few main perspectives on this:

The first view is that there was once a state of "nothing" - a complete void with no matter, energy, space, or time. This notion of an initial state of nothingness is commonly associated with the Big Bang theory of the origin of the universe. According to this theory, all the matter and energy of the universe erupted from an infinitely dense and hot "singularity" around 13.8 billion years ago.

The opposing view is that there has always been "something" - that the universe or reality in some form has existed eternally, with no definitive beginning. This idea of an eternal, cyclical universe has roots in ancient philosophy and cosmology. Proponents argue that the very concept of "nothing" is incoherent or impossible, and that reality must always contain some form of existence.

Ultimately, the question of whether there was once nothing or whether something has always existed is still hotly debated by philosophers, physicists, and cosmologists. It touches on deep questions about the nature of existence, causality, and the limits of human understanding. While scientific observations can shed light on the early history of the universe, the metaphysical question of an absolute origin or eternal existence remains unresolved.

Something Came from Nothing: This idea suggests that at some point, "nothing" existed, and then, without any cause or precursor, "something" came into existence. This concept is difficult to grasp because it contradicts our everyday experience that everything has a cause. Yet, some interpretations of quantum mechanics propose that particles can spontaneously appear and disappear, leading to speculation that the universe itself could have emerged from a quantum fluctuation in a state of "nothingness."

Something Has Always Existed: This perspective posits that there was never a state of absolute nothingness; something has always existed. This "something" could be a form of energy, a primordial state of the universe, or even an infinite sequence of cause and effect. This view aligns with the idea that the universe is eternal, with no beginning or end. In this case, the concept of complete nothingness is indeed impossible because there has always been some form of existence.

Both of these possibilities challenge our understanding of causality, time, and existence. The idea that something could come from nothing seems to violate the principle that every effect must have a cause, while the notion of an eternal existence defies our usual conception of time as having a beginning and an end.