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#1
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Whats the Universe expanding into?
4th dimension? |
#2
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It's not expanding into anything.
The problem is the word "into". "Into" implies something beyond the universe, which of course is false. I would label this question, along with the related question "what lies beyond the universe?" as category errors (what does the colour orange smell like (etc)). |
#3
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Whats the Universe expanding into? [/ QUOTE ] Its staying the same size, its just that everything in it is getting smaller. |
#4
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heat death
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#5
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must not...post...Brandi joke....
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#6
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Whats the Universe expanding into? [/ QUOTE ] I don't know - I can't form a concept of everything there is getting larger - or at least farther apart. But I looked at Wiki out of curiosity and found something else: [ QUOTE ] Accordingly, the question "why is the universe expanding?" is now answered by understanding the details of the inflation decay process which occurred in the first 10-32 seconds of the existence of our universe. It is suggested that in this time the metric itself changed exponentially, causing space to change from smaller than an atom to around 100 million light years across. [/ QUOTE ] Now I don't know the first thing about the physics of this but just going on what the above seems to be saying - that in way less than 1 second after the big bang the universe had the appearance of being 100 million years old - I have to wonder if that would affect our calculations of the age of the universe as it now is. |
#7
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It is suggested that in this time the metric itself changed exponentially, causing space to change from smaller than an atom to around 100 million light years across. [/ QUOTE ] I believe that is an incorrect statement. The true figure, according to my astronomy textbook, it's something like going from the size of an atom to the size of a cherry pit. |
#8
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It is suggested that in this time the metric itself changed exponentially, causing space to change from smaller than an atom to around 100 million light years across. [/ QUOTE ] Hmm, hard to conceive this theory... |
#9
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[ QUOTE ]
[ QUOTE ] Whats the Universe expanding into? [/ QUOTE ] I don't know - I can't form a concept of everything there is getting larger - or at least farther apart. But I looked at Wiki out of curiosity and found something else: [ QUOTE ] Accordingly, the question "why is the universe expanding?" is now answered by understanding the details of the inflation decay process which occurred in the first 10-32 seconds of the existence of our universe. It is suggested that in this time the metric itself changed exponentially, causing space to change from smaller than an atom to around 100 million light years across. [/ QUOTE ] Now I don't know the first thing about the physics of this but just going on what the above seems to be saying - that in way less than 1 second after the big bang the universe had the appearance of being 100 million years old - I have to wonder if that would affect our calculations of the age of the universe as it now is. [/ QUOTE ] It didn't appear to be 100 million years old. You somehow equated the distance they gave you with time. |
#10
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It didn't appear to be 100 million years old. You somehow equated the distance they gave you with time. [/ QUOTE ] I mean if the speed of light is constant it would appear to be 100 or maybe 50 (if the universe expanded in all directions from the BB) million. And if that happened in less than 1 second how would it be after 1 minute? 1 year? |
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