How do atheists explain the Big Bang?
I'm not a Big Bang expert, so that's why the question.
Nothing comes from nothing. How was the matter there when it collided or where did it come from?
Whoever pushes the two things together, nothing will be "pushed" together on its own.
How does time and space exist without a beginning without a creator.
And how do you explain this?
A good example of this is the incredible fine-tuning of the universe. It has been proven that the constants of physics are so finely tuned that, whether by chance or not, such a high degree of fine-tuning is unattainable for human engineering. For example, there is the cosmological constant. Nobel laureate and physics professor Steven Weinberg made the following calculation regarding the cosmological constant:
It seems as if an incredible amount of fine-tuning is constantly required. The existence of any life form seems to require a cancellation of various contributions to the vacuum energy, which should be accurate to approximately 120 decimal places. If not, then the universe would undergo a full cycle of expansion and contraction before life could arise, or it would expand so rapidly that the formation of galaxies and stars would not be possible at all." To put it another way, if this constant were only a part of
1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 ,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000, there would be no chance for life in the universe.
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There are several theories about this.
https://wirtschaftslexikon.gabler.de/definition/inflationstheorien-40588
https://www.spektrum.de/lexikon/physik/urschnell/15018
Quantum gravity-big bang&usg=AOvVaw1qd68D6pkffIyxxpT6Wwlq&opi=89978449
@ :
fluctuare = to fluctuate back and forth
The process of "swaying back and forth" takes time.
Therefore, there must have been time BEFORE THE BIG BANG …
qed
In the standard model of cosmology, space and time are interconnected (space-time continuum). The Big Bang marks the beginning of the space-time continuum; Prior to that, no "time" existed, as it only "began" with the expansion of the universe. I'm extremely excited to see what science will offer in the future (eg, loop quantum gravity, which could "explain" the existing "time" before the Big Bang in a different form).
In the Standard Model, as written above, one cannot speak of "time before the Big Bang", however there are theoretical models that do not see the Big Bang as an absolute beginning, but as a state of something that came before.
Let's see what discoveries science might bring someday and whether we will live to see them.
@ :
Even though I assume that time already existed at the moment of the Big Bang, I think it is wrong to speak of an "early universe" before the "beginning of the Big Bang" – because the universe only came into being through the Big Bang – right?
That's correct. In quantum physics, fluctuations only occur in connection with "space" and "time." In the Standard Model, there is no "space" or "time" before the Big Bang, as these only emerged with the Big Bang, and fluctuations could only have occurred from that point onward. This is where the loop quantum model could come into play, as it "names" the Big Bang not as an absolute beginning, but as a transition (I'd also like to know what came "before," if anything came "before").
In the Standard Model, "space" and "time" emerged immediately after the Big Bang. The loop quantum model describes a different form of "time" even before the Big Bang, which again raises the question: What was "before" and what other kind of "time" existed then?
"Early universe" means the immediate period after the Big Bang, perhaps I expressed myself a bit stupidly above.
OK – so there was already "space" alongside time. Perhaps they were still separate before the Big Bang?
My thought is based on your statement "…that at the quantum physical level, random fluctuations in the vacuum during a certain time in the early universe led to a "quantum leap" that triggered the beginning of the Big Bang."
You speak of "random fluctuations in the vacuum during a specific moment in time." As I already explained, this back-and-forth fluctuation already takes time. Furthermore, you yourself speak of a "moment in time" and even of an "early universe" in which these fluctuations "triggered the beginning of the Big Bang."
As I understand you, space and time (spacetime) only came into being AFTER the Big Bang. But according to your own words, that means that there could have been neither fluctuations (which already require space and time) nor an "early universe" BEFORE the Big Bang.
In my opinion, this is a contradiction. How do you explain it?
I'm also very interested in this…
Perhaps the Big Bang was subsequent to the collapse of the previous universe.
There is currently no scientific theory that can describe what happened before the Big Bang. There are only theories that describe what happened after the Big Bang.
But matter wasn't there before, only energy. But there's still no generally accepted theory as to where that energy came from.
Your claim that the "incredible fine-tuning" is evidence of a higher power can easily be refuted by simply stating that this fine-tuning is the only reason anyone could even ask about it. There could be an almost infinite number of dead universes with different parameters.
Your question is based on the idea that something we cannot explain must have been created by God – without, incidentally, being able to explain where God comes from.
Maybe your question can be answered someday, maybe never. But that's the way it is, and it doesn't mean that God was involved, just that we don't know.
….. the thing about "fine tuning" is a bit misleading. Firstly, it is not clear how many attempts there were, and secondly, we would not be able to ask this question if it were otherwise.
Philosophers and cosmologists have been dealing with this question for a long time, but no result is yet in sight….
mfe
The Big Bang is not a collision (that is a misunderstanding).
As an atheist, I don't think God explains anything; he merely postpones the explanation. If you explain the origin of space/time with a creator, you can just as easily ask: where does this creator come from? What causes this creator? Nothing comes from nothing.
And if one says "God is eternal and has no beginning and no end," one can say the same about the universe, or rather, about the "potential" for something to exist. This potential has obviously been there eternally/always.
Because the universe consists of certain physical rules (universal rules), someone who is not dependent on rules of atoms, time and space is the only one who can create something like this.
Neither "believers" nor "atheists" nor other people can "explain the Big Bang"
The Big Bang theory has nothing to do with atheism, and therefore an atheist does not need to provide an explanation – just as a believer does not need to provide an explanation for the Big Bang.
In the end, both "sides" have the same problem: What was there before anything was there? Who created God? And the creator of God and his creator…
It's Turtles all the way down (and maybe one of them is called Big A'Tuin^^)
I think it would be really funny if breaking news camet was visible/ all news is going out, it's a space turtle with four elephants on its back with a disc xD
As an atheist, I can live perfectly well with the fact that science doesn't yet know everything.
But I couldn't live with someone telling me that a god had a hand in it. Because how would they know which of the 100,000 gods invented by humans that was?
This is not possible to calculate because the cosmic background radiation cannot be traced back that far. It ends in our measurable ranges before the alleged Big Bang. It is not even proven that the Big Bang existed. It is only the most likely theory. It is also conceivable that there were universes. There is the theory that our Big Bang came from a black hole or is the interior of a black hole.
etc
But if you want to ask yourself philosophically whether God exists, then ask yourself one thing: why would a highly complex, mega-intelligent being build an extremely stupid thing that can do absolutely nothing real except eat, sleep, be horny, and destroy the planet for our living conditions.
Humans cannot manage themselves in any generation without destroying one another.
If this intelligence is so highly developed, why does it build idiots?
Explanation she is stupid herself or non-existent.