If space is curved and the big bang theory correct?

Question

If space is curved and the big bang theory correct, then will all the material thrown out by the big bang eventually return on to itself, faster and faster as the force of it own gravity increases, until it all becomes very dense and another big bang occurs?. . .and so on and so on. . and would that mean that some of the galaxies on the outermost edges would be seen twice. . i.e. once going out, as it were, and once coming back?

Answer 1

The big bang theory is correct . There are two possibilities for the future of the universe 1) . it could keep expanding forever, or 2). it could reach a point where it starts to contract into itself resulting in the big crunch , which in turn would result in another big bang and so on . It all depends on the the mass of the universe , if there's not enough mass then there will be constant expansion , if there's to much then the big crunch will happen.

Answer 2

Georges Lemaître was a Catholic priest who first proposed what became the Big Bang Theory. However the Big Bang Theory has changed significantly since his initial idea of a primeval atom. He also wrote, "As far as I can see, such a theory [of the primeval atom] remains entirely outside any metaphysical or religious question. It leaves the materialist free to deny any transcendental Being… For the believer, it removes any attempt at familiarity with God." The Big Bang Theory shows how the universe grew from nothing but a random quantum vacuum fluctuation, creating the energy and matter as it expanded (with the balancing negative energy in the gravitational field). This doesn't make sense in our Newtonian experience, but it does in the physics of quantum mechanics and relativity. For more about the Big Bang and its implications, watch the video at the 1st link - "A Universe From Nothing" by theoretical physicist Lawrence Krauss, read an interview with him (at the 2nd link), or get his new book (at the 3rd link). See the 4th link for "The Universe: Big Bang to Now in 10 Easy Steps." And, see the 5th link for "Quantum scientists make something out of nothing." "The total energy of the universe is precisely zero, because gravity can have negative energy. The negative energy of gravity balances out the positive energy of matter. Only such a universe can begin from nothing. The laws of physics allow a universe to begin from nothing. You don't need a deity. Quantum fluctuations can produce a universe." - Lawrence Krauss, physicist

Answer 3

the only real basis on the big bang theory is because the universe is currently expanding and its contents are moving away from the "middle", suggesting it all began with an explosion pushing cosmic gases, which eventually became planets, stars and asteroids, in an outwards direction.

another theory is that space is curved, like if you were in open outer space and shone a powerful enough laser it would follow a curved and hit you in the back after travelling the curved universe. this theory is carried by scientists who believe that the universe in never-ending and continues in a loop to eternity.

both are theories and i don't think we'll ever figure it out in your lifetimes.

Answer 4

Read up on "Quantum Mechanics" and a little "String Theory" if you really want to know.

The "Big Bang" did happen, there is NO DOUBT about it!!!!!!!

The other posters answers are very myopic at best.

If you could see down to the "Planck Length" you could see the "seething, roiling, "Fabric of Space". Maybe then you could understand that at that level, particles "pop" into and out of our Universe constantly and this Space/Time Foam is the engine drives our Universe like a Freight Train to our ultimate destination ;-)

Answer 5

What difference does it makes? It is all irrelevant. How can we pretend to understand the universe from a single observation point? So there is background radiation, So what? There is Doppler shift to the red, So what? Do you know what all these constants in all these formulas mean? A way to cheat and make everything fit when in fact it doesn't! We think we understand the universe, how naive! A big bag. How many? What about multiple bang at different times. If a star turns Hydrogen turns into Oxygen, and Oxygen into Carbon and Carbon into Iron and iron can not be fused any more, only a lot of energy was released in the process, then at the end everything will be consumed. Matter has turned into energy used to heat up a big void that extend forever.

It is all irrelevant.

Live your life, have a happy life, enjoy the stars while they are there and dream.

Answer 6

The latest data shows that the universe is expanding faster than ever. That "fact" plus the calculation that the universe is "open" and not closed means that there will not be a big crunch. Everything will keep expanding until it all gets cold and dark.

Answer 7

As far as I understand it, that is how it works. Big Bang eventually turns into a Big Crunch and repeats all over again. It have been doing this forever.

Answer 8

Lots of scientists think that the Big Bang will one day be followed by the Big Crunch - but this is based on the fact that if the universe is currently expanding then it might at some point start contracting - like a balloon being continually inflated and deflated. I don't think that the space-time curvature has anything to do with expansion.

It is interesting to imagine what a contracting universe would be like. Would time ( a dimension like any other) start to run backwards? Would we appear again, beginning at our death and living our lives backwards?

Strange thought.

Answer 9

Its possible that the big crunch will occur depends on mass. Alternately the universe could keep on expanding until it dies its matter too spread to interact. It all depends on how much mass their is.

As to seeing things twice if time reversed its possible except for black holes
which would lie outside the crunch.

Answer 10

Yes,Big Bang theory is correct.