I believe 100% in the big bang and evolutionary theory. The big crunch is one of the main theories on what the ultimate fate of the Universe will be.Just as the big bang occurred, the Universe must collapse on itself sometime, so if this is true do you think it could be possible that the Universe has many cycles, expanding then collapsing into a tiny sphere of matter the size of a marble such as when the big bang occurred. Since we dont know the true answer to any of these questions, I believe we should be open to any idea, because all of them are right but none of them are wrong.. ;)
2007-11-27 05:07:44 · 7 answers · asked by rzaforshiza 1 in Science & Mathematics ➔ Astronomy & Space
Actually, recent evidence seems to suggest that the Universe is expanding too fast for gravity to overcome it, so it will continue to expand forever and no "Big Crunch" will occur. In trillions of years all the fusionable material will be used up and the stars will die out -- the Universe will become a very cold and dark place. There's no reason to believe that the Universe must follow some kind of repeating cycle; it might just be a one-time thing. A fluke, even.
2007-11-27 05:13:47 · answer #1 · answered by Nature Boy 6 · 3⤊ 0⤋
The universe has all the original energy and mass it had when it began, since energy and matter can not be created nor destroyed. Since the beginning, the material has been expanding into empty space, the term "empty space" being an oxymoron. Space is defined as the distance between two objects, and is not "empty". The universe is expanding into a region which contains nothing.
It was once assumed that there might be enough matter in the universe to eventually stop its expansion. Gravity would then work to pull all the mass together again into a giant black hole. This might suddenly explode in another "big bang". However, it is now known there is a mysterious repulsive force which is activly pushing matter farther apart. This could mean the universe will continue to expand forever. In such a scenario, each atom would eventually find itself surrounded by an infinitly large space, and in effect be its own universe. Mathematics might offer an alternate fate. Einstein said space and time warp back upon themselves. This means that at some point, all the matter flying apart would begin to fall back together, even though it had not changed direction. This is hinted at by the graphical representation of 1/x. The line becomes vertical as it approaches zero, but never reaches the value. Just on the other side of zero, the line falls back down and heads in the other direction.
2007-11-27 13:32:24 · answer #2 · answered by Roger S 7 · 1⤊ 0⤋
Currently the big crunch is fading. The latest observations show the galaxies accelerating away from each other. Scientist are busy revising their theories because of this and crunching is not a strong possibility anymore. One of the new theories suggests that there is an unknown force that acts like reverse gravity, or is perhaps a property of dark matter. It would be responsible for the acceleration, which would continue until eventually, far in the future, everything would be moving so fast that space would "fracture" somehow and new universes would form from the pieces. That brings up a lot of other questions, of course, but it's a very young hypothesis among several other new hypotheses based on what we observe. They're still working out the details. It doesn't sound very symmetrical, but you have to go with the facts, not what you wish.
2007-11-27 13:40:09 · answer #3 · answered by skepsis 7 · 2⤊ 0⤋
The Big Crunch model is very falsified by current WMAP data. The universe will not recollapse.
2007-11-27 13:12:47 · answer #4 · answered by ZikZak 6 · 3⤊ 0⤋
The thing that gets me about the expanding universe is this: is it expanding? As opposed to what? To what can we compare it? As opposed to contracting? It is getting colder, and it is expanding more slowly. What if our earth is nothing but a speck on a hair of God? We will be here forever. He knows all about us. It is futile for us to try to figure out what is going to happen to us because He knows all. We are so small and even this singular VAST universe is itty bitty.
I love it!
2007-11-27 13:30:44 · answer #5 · answered by Brightlight 3 · 0⤊ 2⤋
Great that you are "a believer" of these things, but someone needs to tell you that there is no Church of Science and these things are not up for anyone's beliefs. Either you KNOW them or you got nothing. The belief thing does not work with science. Sorry. If you need a belief system, please join a church or a cult.
2007-11-27 13:26:30 · answer #6 · answered by Anonymous · 1⤊ 1⤋
perhaps you could enlighten us as to where that marble sized sphere of matter came from and why it shrank into that tiny ball and what caused it to explode. I'll be waiting with bated breath for your answer.
2007-11-27 13:30:40 · answer #7 · answered by Loren S 7 · 0⤊ 1⤋