Big Bang Theory Question.

hmm

Okay, so let's say the big bang theory is correct. That there was just one huge explosion that created everything and life as we know it....

Well, first of all... Where did the explosion come from?

And wouldn't it have to end at some point in time>?

It couldn't go on forever could it?

So wouldn't that make out universe either never ending in size? Or if it did stop, what is beyond the universe? Something has to be there.

..... I'm just wondering what people think.

vincent

The big bang is not so much an explosion, but a giant rapid expansion of spacetime itself.

The bing bang is also seperate from biogenesis.

In the big bang theory the universe is still expanding, it is not infinite in size.

Actually there is three possibilities, the universe could be expanding and the expansion rate is increasing, or it is expanding and the expansion rate is decreasing meaning that one time it will reach a maximun size and start to decrease until it become a point again , or it is estactic(like Einstein thought in the beginning).

By observations with the Hubble telescope scientists concluded that the universe appears to be expanding and that expansion rate is increasing. What they obversed is that the stars are moving away from each other and from us like if the universe is expanding.

Science don´t know from where the explosion came from, and if in fact the universe is expanding then it will increase in size forever by what is know. But there is a lot of things we don´t know yet so I think it is too early to draw any conclusions.

Originally posted by Alliance
The bing bang is also seperate from biogenesis.

Serious question here from someone who doesn't follow astronomy. Was that a typo or a new term? If the latter, I like the name!

the explosion came from a singularity. A single tiny point infinitely small containing all the matter and energy in the universe.

Originally posted by Vinny Valentine
[b]

hmm

Okay, so let's say the big bang theory is correct. That there was just one huge explosion that created everything and life as we know it....

Well, first of all... Where did the explosion come from?

And wouldn't it have to end at some point in time>?

It couldn't go on forever could it?

So wouldn't that make out universe either never ending in size? Or if it did stop, what is beyond the universe? Something has to be there.

..... I'm just wondering what people think.

vincent

[/B]

I always maintained the idea that space was infinite, because time is.

If the universe began at a definitive point in time, there was obviously something before.

-AC

Relative to the stuff in the universe, the universe is the same size always, because we expand as it does.

The Big Bang is the theory of how the universe came to be. It is a "rip" in spacetime that expanded rapidly. I'm not sure whether it will expand forever or won't, in theory, it shouldn't because energy cannot be destroyed, so where would it go? If it did stop expanding, then it would just contract into itself.

These are all just my opinions though.

Quantum mechanics states that the vacuum of space (ie, our familiar spacetime) is seething and roiling with energy: random vacuum fluctuations. It has been theorized that the Big Bang was nothing more than a "giant" random vacuum fluctuation in a much, much larger space: a "false vacuum" seeking a lower, more stable energy state.

Currently it is postulated that our universe will expand forever at an ever-accelerating rate until it is trillions upon trillions of times its present age. At this point, all entities (eg, protons, black holes) will have "dissolved" back into the false vacuum.

It has also been theorized that, just as our universe is filled with countless and unceasing vacuum fluctuations, so is this immense false vacuum filled with countless, supersized vacuum fluctuations, some of which produce more universes (just as the vacuum fluctuations in our spacetime produce virtual particles).

Originally posted by botankus
Serious question here from someone who doesn't follow astronomy. Was that a typo or a new term? If the latter, I like the name!

😂 Sorry, that was a typo. It does have a ring to it.

LOL I agree , bing bang!!!

I always thought the Big Bang came around originally due to the four forces. Inevitably happening after they grew to powerful (pent up) within the singularity.

Bing Bang came first, and as the initial "superforce" cooled, phase transitions differentiated the four forces, much like cracks appearing as water phase-transitions (freezes) into ice.

You can't say the big bang came first.

There was something before it.

-AC

The false vacuum.

Originally posted by Mindship
The false vacuum.

Before that? There was always something.

The idea that time could ever definitively begin is flawed.

-AC

Originally posted by Vinny Valentine
[b]

hmm

Okay, so let's say the big bang theory is correct. That there was just one huge explosion that created everything and life as we know it....

Well, first of all... Where did the explosion come from?

And wouldn't it have to end at some point in time>?

It couldn't go on forever could it?

So wouldn't that make out universe either never ending in size? Or if it did stop, what is beyond the universe? Something has to be there.

..... I'm just wondering what people think.

vincent

[/B]

your second question is a bit tougher: it would depend on the form matter adopted after the explosion, and the amount of matter and energy in space, if there's too much matter, the universe will shrink again to an enormously dense "egg", if there's not enough matter, the universe will grow forever, and if there's a certain exact amount of matter, the "growth of the universe will eventually stop and will remain the same size.

and the last question really depends on your definition of "universe" if by universe, you mean the total space used by matter, or if you mean everything there is, but i honestly don't know n_n

The false vacuum theory is what you get if you rely WHOLLY on quantum mechanics... No reletivity or modern advancements at all.

It's often speculated that the big bang was not really an explosion, but the expansion and cooling of a quantum singularity (a point of infinite mass and density), like those supposedly thought to be at the centers of black holes.

There are many theories stating whether the univerese will expand forever, or whether it is either expanding or contracting back into itself, once again returning to its original infinite state, until it begins its expansion and cooling once more. My guess is we'll probably never really know unless we could travel at faster-than-light speeds, such as traveling through the fabric of space or whatnot, which is also being experimented with at the moment. The most we can do until then is develop more powerful telescopes, and keep looking deeper into the universe, but from a distance, like a celestial stalker.

Bring on the Big Crunch!

Originally posted by Alpha Centauri
Before that? There was always something.

The idea that time could ever definitively begin is flawed.

The false vacuum theory is what you get if you rely WHOLLY on quantum mechanics... No reletivity or modern advancements at all.