- #1
zketrouble
- 47
- 0
Hi all,
First let me say that I'm not an astrophysicist but that I have some understanding of classical physics. So it has been said that the universe is expanding, but what evidence is there of this other than the fact that things seem to be drifting apart? Since much of the universe is unobservable to us due to the rate which light from foreign objects travel to us, how can it be so asserted that the universe is expanding and that it is finite rather than infinite? If something is getting bigger it must be finite. Couldn't things just be drifting away from each other in empty space? Sure gravity would probably cause the opposite, but only if two bodies were large/close enough. Seems like just as good of an explanation as saying that empty space, nothingness, is being created from nothing.
Of course the second law of thermodynamics states that entropy of the universe is always increasing. In this case, what would happen in so many billion years when the universe reaches maximum entropy? Well if the universe and matter were infinite, maximum entropy would never be achieved. In a finite universe, more space would increase the number of states in which matter could exist.
How theoretical is the statement that the universe is getting expanding? Just curious.
First let me say that I'm not an astrophysicist but that I have some understanding of classical physics. So it has been said that the universe is expanding, but what evidence is there of this other than the fact that things seem to be drifting apart? Since much of the universe is unobservable to us due to the rate which light from foreign objects travel to us, how can it be so asserted that the universe is expanding and that it is finite rather than infinite? If something is getting bigger it must be finite. Couldn't things just be drifting away from each other in empty space? Sure gravity would probably cause the opposite, but only if two bodies were large/close enough. Seems like just as good of an explanation as saying that empty space, nothingness, is being created from nothing.
Of course the second law of thermodynamics states that entropy of the universe is always increasing. In this case, what would happen in so many billion years when the universe reaches maximum entropy? Well if the universe and matter were infinite, maximum entropy would never be achieved. In a finite universe, more space would increase the number of states in which matter could exist.
How theoretical is the statement that the universe is getting expanding? Just curious.