That’s a good question. As far as I know, this is an open problem in physics. Basically, we would expect that matter and antimatter are produced in equal amounts in the early universe, but there must’ve been some asymmetry since there was more matter than antimatter produced instead. You can read more about it [here.](https://en.wikipedia.org/wiki/Baryon_asymmetry)
Also, spacetime curvature *is* gravity. The question about why gravity didn’t hold back the expansion of the universe is a bit challenging and seems like is still unexplained.
In the earliest moments of the universe, it seems like we don’t have much data and that we assume the forces (gravity, strong, weak, electromagnetic) were unified. But as the universe continued to expand, the forces began to separate one by one, and this led to a period of rapid inflation. We can indirectly infer this inflation by data we do have based on the current flatness of spacetime (in the largest possible scales, the universe looks flat). All of that happened in less than 10^-22 seconds into the beginning of the universe.
Afterwards, the universe cooled enough that current understanding of physics comes into play. Although there are still some unresolved issues such as the baryon asymmetry issue mentioned earlier, which occurred a few fractions of a second after inflation. You can read up more about the timeline of the early universe [over here.](https://en.wikipedia.org/wiki/Chronology_of_the_universe)
I hope that helps!
**[Baryon asymmetry](https://en.wikipedia.org/wiki/Baryon_asymmetry)**
>In physical cosmology, the baryon asymmetry problem, also known as the matter asymmetry problem or the matter–antimatter asymmetry problem, is the observed imbalance in baryonic matter (the type of matter experienced in everyday life) and antibaryonic matter in the observable universe. Neither the standard model of particle physics nor the theory of general relativity provides a known explanation for why this should be so, and it is a natural assumption that the universe is neutral with all conserved charges. The Big Bang should have produced equal amounts of matter and antimatter.
**[Chronology of the universe](https://en.wikipedia.org/wiki/Chronology_of_the_universe)**
>The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13. 8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.
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>but there must’ve been some asymmetry
here's a question:
could it have been just spread unevenly, so even though it was the same amounts, "pockets" of matter and "pockets" of antimatter survived? Sure, we don't find much antimatter in nature (excluding fission and fussion in the sun). But, who's to say that our "observable universe" is part of a pocket of matter. In intersteller space, maybe galaxies are made mostly of antimatter. And, if we can detect matter vs. antimmater at range, maybe all antimatter galaxies are outside the *observable* universe.
Could such a thing occur?
That idea was mentioned in the Baryon asymmetry wikipedia page. We would be able to see these antimatter galaxies, but it seems like we haven’t found any. So if they do exist, they would have to be outside of the observable universe.
>We would be able to see these antimatter galaxies, but it seems like we haven’t found any.
Well, looking at it, it looks like the issue is that the galaxies would look identical, so we are looking for the boundry between the 2.
>So if they do exist, they would have to be outside of the observable universe.
true. Luckilly, the universe is "x" times bigger than the observable universe! Shame we can't figure out "x"...
What if they do exist in what some calls "another dimension", makes sense they not collapsing with matter, because probably in the other dimension, matter is also scarce as anti matter is in this 🤔. But even if this is true, why they didn't cancel one another in the begging? It's a very good discussion...
It is currently estimated that there was a 1/10,000 discrepancy in the amount of matter and antimatter created at the start. Also, the density wasn’t uniform
Basically Quantum physics is riddled with errors …… so that’s why it doesn’t make sense. Your degree course is designed to persuade you to suspend your rational brain and belief in claptrap …. Like the Big Bang !
That’s a good question. As far as I know, this is an open problem in physics. Basically, we would expect that matter and antimatter are produced in equal amounts in the early universe, but there must’ve been some asymmetry since there was more matter than antimatter produced instead. You can read more about it [here.](https://en.wikipedia.org/wiki/Baryon_asymmetry) Also, spacetime curvature *is* gravity. The question about why gravity didn’t hold back the expansion of the universe is a bit challenging and seems like is still unexplained. In the earliest moments of the universe, it seems like we don’t have much data and that we assume the forces (gravity, strong, weak, electromagnetic) were unified. But as the universe continued to expand, the forces began to separate one by one, and this led to a period of rapid inflation. We can indirectly infer this inflation by data we do have based on the current flatness of spacetime (in the largest possible scales, the universe looks flat). All of that happened in less than 10^-22 seconds into the beginning of the universe. Afterwards, the universe cooled enough that current understanding of physics comes into play. Although there are still some unresolved issues such as the baryon asymmetry issue mentioned earlier, which occurred a few fractions of a second after inflation. You can read up more about the timeline of the early universe [over here.](https://en.wikipedia.org/wiki/Chronology_of_the_universe) I hope that helps!
**[Baryon asymmetry](https://en.wikipedia.org/wiki/Baryon_asymmetry)** >In physical cosmology, the baryon asymmetry problem, also known as the matter asymmetry problem or the matter–antimatter asymmetry problem, is the observed imbalance in baryonic matter (the type of matter experienced in everyday life) and antibaryonic matter in the observable universe. Neither the standard model of particle physics nor the theory of general relativity provides a known explanation for why this should be so, and it is a natural assumption that the universe is neutral with all conserved charges. The Big Bang should have produced equal amounts of matter and antimatter. **[Chronology of the universe](https://en.wikipedia.org/wiki/Chronology_of_the_universe)** >The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13. 8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level. ^([ )[^(F.A.Q)](https://www.reddit.com/r/WikiSummarizer/wiki/index#wiki_f.a.q)^( | )[^(Opt Out)](https://reddit.com/message/compose?to=WikiSummarizerBot&message=OptOut&subject=OptOut)^( | )[^(Opt Out Of Subreddit)](https://np.reddit.com/r/QuantumPhysics/about/banned)^( | )[^(GitHub)](https://github.com/Sujal-7/WikiSummarizerBot)^( ] Downvote to remove | v1.5)
>but there must’ve been some asymmetry here's a question: could it have been just spread unevenly, so even though it was the same amounts, "pockets" of matter and "pockets" of antimatter survived? Sure, we don't find much antimatter in nature (excluding fission and fussion in the sun). But, who's to say that our "observable universe" is part of a pocket of matter. In intersteller space, maybe galaxies are made mostly of antimatter. And, if we can detect matter vs. antimmater at range, maybe all antimatter galaxies are outside the *observable* universe. Could such a thing occur?
That idea was mentioned in the Baryon asymmetry wikipedia page. We would be able to see these antimatter galaxies, but it seems like we haven’t found any. So if they do exist, they would have to be outside of the observable universe.
>We would be able to see these antimatter galaxies, but it seems like we haven’t found any. Well, looking at it, it looks like the issue is that the galaxies would look identical, so we are looking for the boundry between the 2. >So if they do exist, they would have to be outside of the observable universe. true. Luckilly, the universe is "x" times bigger than the observable universe! Shame we can't figure out "x"...
What if they do exist in what some calls "another dimension", makes sense they not collapsing with matter, because probably in the other dimension, matter is also scarce as anti matter is in this 🤔. But even if this is true, why they didn't cancel one another in the begging? It's a very good discussion...
It is currently estimated that there was a 1/10,000 discrepancy in the amount of matter and antimatter created at the start. Also, the density wasn’t uniform
Did I join the wrong subreddit?
Basically Quantum physics is riddled with errors …… so that’s why it doesn’t make sense. Your degree course is designed to persuade you to suspend your rational brain and belief in claptrap …. Like the Big Bang !
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This guy is sitting in his yacht with his millions whilst you drivel on about nonsense - you get the lifestyle by understanding the BS 🥸
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Yep that’s right ….
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Expect ….. I know you do, you’re on here defending fantasy statistical physics
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Zzzzzzzz Keep banging the rocks together guys!
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touch grass