Why is matter unevenly distributed in space?

DaveC426913 said:
The onus is not on me to refute your nonsense.

Look at this latest nonsense, posted just a few minutes ago:


This doesn't need refutation; it's just more ign'ance.
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Ага, невежества, только вашего, а не моего.
 
Olga said:
Нет, не полезный. Вы описываете, но не объясняете. Это неправильно.
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Believe it or not Olga I am not a super genius theoretical physicist or multi talented polymath experimentalist.
I am a humble Bsc applied Biologists /technologist who is trying to learn somewhere between A levels and first year physics. If I touch on cosmology and black holes I am straying into year two maybe even three.
 
sculptor said:
I do not agree that matter is unevenly distributed in space.
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It is a bit of an ambiguous phrase, depending on the scale we look at. There are a few ways of interpreting it.

There is a question of why the entire universe isn't perfectly uniform, since we believe it expanded from a volume smaller than an atom, and there is no known reason why there would by any variation at all in that initial bubble.

But this is what we think it looks like now at the largest scale.

1758756134038.png

Sure, gravity pulled matter into clumps and tendrils, but where did those first inhomogeneities originate?

We sort of have to define the question first: at what scale are we talking about uneven distribution? Unfortunately, we can't leave that clarification to the OP who asked the question since they are not familiar with modern cosmology, or, apparently, physics.
 
DaveC426913 said:
It is a bit of an ambiguous phrase, depending on the scale we look at. There are a few ways of interpreting it.

There is a question of why the entire universe isn't perfectly uniform, since we believe it expanded from a volume smaller than an atom, and there is no known reason why there would by any variation at all in that initial bubble.

But this is what we think it looks like now at the largest scale.

View attachment 7060

Sure, gravity pulled matter into clumps and tendrils, but where did those first inhomogeneities originate?

We sort of have to define the question first: at what scale are we talking about uneven distribution? Unfortunately, we can't leave that clarification to the OP who asked the question since they are not familiar with modern cosmology, or, apparently, physics.
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Вы поговорите, Дэйв, а я вас внимательно послушаю. Вдруг, узнаю что-нибудь новое для себя?
 
Pinball1970 said:
But not from me? Pinball??

I try my best but it is never enough ;)
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Я ценю ваши старания, Пин. Наверняка вы сможете мне помочь в вопросах химиии и биологии.
 
Moderator note: Olga has been warned for trolling.

Scientific claims should be supported with suitable evidence and/or arguments. Empty statements that claim that established scientific theories are "fantasy", or similar, look more like attempts to provoke angry reactions from people who understand science. That is a form of unacceptable trolling.

Due to accumumulated warning points, Olga will be taking a brief break from sciforums.
 
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Matter actually is distributed reasonably evenly over large scales. The Universe is isotropic and homogeneous over large scales. That is according to the last time I looked, is known as the "Cosmological Principle" Homogeneous meaning uniform matter, and Isotropic meaning looking the same in all directions.
 
It is my understanding that the universe is homogeneous at large scales, in the sense that if you pick two large-enough chunks of the universe at random, each one will contain approximately the same amount of matter, the same number of galaxies, and so on.

However, on the largest scales, the universe seems to consist of a cosmic "web" in which the "strands" contain lots of galaxies and matter, but the strands are separated by large voids. So, in that sense, the universe doesn't look homogeneous.
 
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