The origins of universe and development

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The discussion revolves around the origins of the universe, specifically the relationship between matter and antimatter. It highlights that both matter and antimatter were created during the universe's inception, yet matter predominates, leading to questions about the apparent absence of antimatter. The conversation notes that matter and antimatter annihilate upon contact, which contributes to the observed imbalance. Despite the lack of understanding regarding why matter outnumbers antimatter, there is speculation about the existence of antimatter-dominated regions in the universe. The topic underscores the complexities of cosmic development and the ongoing mysteries of particle physics.
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i have a question, if we see thousands of universe
one + and -
like +-+-+-+-
-+-+-+-+

because we livein positive universe , we may create all matter, but where is all anti -matter , it should have been made in origins of universe? shouldn't it?
 
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The way this goes as far as I know is antimatter and matter WERE made in the origins of our universe. Look at the names though, they don't like each other very much. A great battle ensued and for reasons unknown matter won the battle. This great battle released LOTS of energy though and was extremely important to how our universe developed.

I do not know what you mean 'if we see thousands of universe' or about the +-+-+-+-.

Of course I'm not extremely knowledgeable in this area so when someone who is comes along and what I've said is wrong just correct it.
 
Dex said:
i have a question, if we see thousands of universe
one + and -
like +-+-+-+-
-+-+-+-+

because we livein positive universe , we may create all matter, but where is all anti -matter , it should have been made in origins of universe? shouldn't it?

Matter and anti matter annihilate each other if they touch and this meas that there are more matter than anti matter.

However, why there is more matter than anti matter is something we don't know, but maybe somewhere there is a planet or some type of object made purely out of anti matter.
 
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
Why was the Hubble constant assumed to be decreasing and slowing down (decelerating) the expansion rate of the Universe, while at the same time Dark Energy is presumably accelerating the expansion? And to thicken the plot. recent news from NASA indicates that the Hubble constant is now increasing. Can you clarify this enigma? Also., if the Hubble constant eventually decreases, why is there a lower limit to its value?
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