if the universe seems to have the property of elasticity doesnt that imply that one day it will contract?

Question

a strong gravitational fields generate anomalies in space and time like black holes, which essentially its a region of space in where a super dense object like a massive star has collapsed on itself owing to the intense force of gravity thus leading ultimately to what is known as a singularity. this is the point where the force of gravity its so great that it curves space time on itself not allowing anything not even light to escape if the event horison has been crossed. so if space time can be bent by intense gravitational fields that seems to show elasticity of space-time, and by logical reasoning as it can be seen from any elastic object on earth, if u distort the shape of an elastic, eg: stretch it to its limits, once the elasticity threshold has been reached then depending if u pass this limit or not three things can happen, the elastic will rip apart, it will just stop strething, or it wil start to contract, doesnt this same principle applies to the universe? which one its right?

Answer 1

As another answerer stated a black hole is a local phenomenon. It's effects can stretch a long way but there is a limit to how far it's gravity can effect objects. Now no one seems to have mentioned another property of the universe that has been recently observed ... Dark Energy. There is some kind of "anti-gravity" that not even the smartest Physicist can explain but it is there and it is accelerating the universe's expansion. Originally proposed By Albert Einstein as a balancing power to gravities effects. He liked the idea of a static (read not expanding or contracting) universe but, decided that it was his worst idea and scrapped it entirely. His idea has been recovered from the dustbins of history and changed because we certainly DO NOT have a static universe (as it is accelerating at an every increasing pace) and his repulsive force is MUCH stronger than he originally imagined. Also, it has been theorized that as the universe expands this energy gets stronger making it into a run away effect. And so it does not seem that we will have a big crunch at all.

Answer 2

First of all, the universe IS expanding. As the objects get further apart their gravitational pull on each other weakens and will continue to do so forever. Our moon is moving away from Earth at about two inches per year. The universe will not collapse back in upon itself.
Now a giant star. The star burns out (so to speak) and collapses in upon itself because:
The internal energy source of the star is like nuclear fission. A never-ending exploding atomic bomb. When the energy is depleted there is no longer a radiating force to maintain its expansion. Instead of the stars matter continuing in the direction it was heading the gravitational pull of the mass and close proximity of the mass to itself overcomes the force of inertia. The matter of the star collapses into a super dense neutron star, the next best thing to a black hole.
The mass of the universe is too spread out to pull off a stunt like that. Make sense?

Answer 3

i am not sure that you can describe the bending of space by gravity as elasticity or that you can compare it to your underwear.
black holes do not suggest that the universe is being stressed although it could be argued that it is locally storing potential energy like a spring.
the theory of the perpetually oscillating universe suggests that the energy of the big bang will one day be overcome by the forces of gravity and that all will reassemble into a new cosmic egg only to keep expanding and contracting.
this has always been my favorite cop out for not having an explanation for where the universe came from. it has always been an will always be. however this explains nothing and violates the second law of thermodynamics.

Answer 4

According to 2nd law of thermodynamics if it take precedence over other Theories. Energy dissipates into the Universe and when a celestial body absorbs it that body will expand its orbit in order to maintain its angular momentum constant. That is why the celestial bodies 's orbits in the Universe appear to expand radially its a Relativity gravitational phenomena.

Answer 5

Your reasoning sounds all right, but the distortions of spacetime caused by black holes are local phenomenon. On the overall scale of the universe they are insignificant. Also, recent observations and research has shown that the expansion rate of the universe is increasing rather than decreasing.

Answer 6

there is a group of people that believe that one day the universe (as it expands) will slow down, eventually coming to a halt, and the gravitaional pull will pull everything back into the center of the universe (where the "big bang" supposedly happened), resulting in a "big crunch". doesn't that sound painful?

Answer 7

This could eventually lead to the Gnab Gib

Answer 8

duh--people alreayd believe that. they say that maybe there had been hundreds of big bangs...universes expanding...then contracting...and the process starts again. we can never know. but it awes me to feel how old and how large the universe is.

Answer 9

Yes.

Answer 10

We dont have to contract we might expand.