Meow12
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The universe started off as a point and has been expanding for 13.7 billion years. Since this is a finite amount of time, how can the universe be infinite?
It didn't. This is is a common misconception. It started out in a "hot, dense" state.Meow12 said:The universe started off as a point
There are two possibilities: either the universe is much larger than the observable universe or the universe is infinite. If it's infinite, then it has always been infinite - even when it was initially hot and dense.Meow12 said:and has been expanding for 13.7 billion years. Since this is a finite amount of time, how can the universe be infinite?
It did not so any logical inference from that is not going to tell you anything about the actual physical model.Meow12 said:The universe started off as a point and has been expanding for 13.7 billion years.
Some sources are sloppy about the distinction between the universe and the observable universe (which is the part of the universe we can see, more or less), and also which cosmological model they are talking about.The observable universe is finite and was small in the past, although "started as a point" is a bit dubious for various reasons. Depending on which cosmological model you are talking about the universe may be finite and very large, in which case it was small in the past too, or it may be infinite, in which case it always was.Meow12 said:The universe started off as a point and has been expanding for 13.7 billion years.
As said above, this is a common misconception. Try reading actual physics instead of pop-sci presentations.Meow12 said:The universe started off as a point and has been expanding for 13.7 billion years.
You might be interested in this thread that I started recently.Meow12 said:The universe started off as a point and has been expanding for 13.7 billion years. Since this is a finite amount of time, how can the universe be infinite?