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Are there any other theories aside from the mainstream big bang theory that you think is a likely explanation of our universe?

I have heard of a few scientific theories that aim to explain the origin of our universe that I think are interesting. There is String Theory, for example.. Or the theory where the universe started from different, smaller explosions... Or a multiverse theory where our universe may be one of many universes out there that formed in the same way galaxies are born but on a bigger scale. There's even Simulation Theory that people like Elon Musk find possible. Do any of you subscribe to other theories aside from the mainstream Big Bang Theory as an explanation for the origins of our universe? Let me know what you think ๐Ÿ™‚

mek7730 7 June 13

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I like the simulation theory. Of course, being a software engineer helps. After all, reality is just the interface of the senses. But I think it's meaningless to ask what it is interfacing with.


The Big Bang is so wrong its amazing anyone could think that its true.

gater Level 7 June 13, 2018

Why do you say this?

@indirect76 Because the Universe had no beginning, and yet it tries to explain a beginning.


The thing that bothers me is, what's done with knowledge gained from the past? I agree it is fascinating, but in the end, what do we do with the information? I hope we don't try to create any other worlds or universes because we have already littered up this one.


I got my own theory i can share but its nothing more than my thoughts. i think its possible that just because everything is flying away from everything doesnt in fact denote a singularity. it is possible that somewhere out there is a place that new matter is constantly formed and as process occurs things are sent hurling through space. we are very limited in our view of things if u just look at the truth of all w really can prove 100% without question. im probable 100% wrong but its just something i been toying with for a while and i might develop it more as new things are learned. i just can't see all the matter of the universe being all packed in to one singularity but im not a physicist or astronomer, just a hobbiest that ponders these things. i know as a kid i had my own version of the goldilocks theory that wasnt exact but still was correct somewhat and this was long before i heard of the actual theory. i explained it as heat from a star meets cold from space and at a certain point and u can have the creation of the ozone in some way hot and cold make steam and such. therefore making life only possible at certain spots around stars. felt good to finally see it actually in a real science journal even tho i had some things wrong.

jorj Level 8 June 13, 2018

Not that I went to school on this, but my understanding is that the part of the Big Bang theory that deals with the idea of all the matter occupying a small space made some predictions. The prediction was that there should be a constant background radiation. That was of course found, so that is one piece of evidence.

@indirect76 like i said, im prob 100% wrong but i still like to ponder on it all. i will always say the actual scientist have more to offer to prove the Big Bang.


To clear up some misconception: neither string theory nor multiverse are alternatives to big bang. Neither is the simulation hypothesis since the big bang could still be simulated.

One of my favorite alternatives however is Roger Penrose's Confromal Cyclic Universe. This is the latest in a brand of theories that say that Universe doesn't "bang" or doesn't "bang" just once but rather expands and contracts as a lung would. It doesn't require a singularity; only that when matter is dense enough it starts repealing in an outwards cycle and when matter is rarefied enough, it starts to contract.

never heard of Confromal Cyclic Universe but def will look in to it. thanks for sharing.


Quite irelavent to the crisis of meaning . You will find your own answers or not most will not involve theories just a way of coping.


There was no beginning - Infinite space has always been here.

gater Level 7 June 13, 2018

I'll stick with the inflationary model of the Big Bang as long as the evidence continues to support it over anything else. The rest are pretty much speculation and, as much as I love speculation, that's where they'll remain until further evidence suggests otherwise. Emergence is interesting and I look for more along this line to explain anti-entropic development, but it's not about cosmological origin. String theory remains that and evidence to support it is a major issue. It's also not an origin theory. Simulation is still SF. Here's a recent article that provides a brief history of our understanding of cosmological origin::// I am particularly interested in dark matter/energy which apparently make up about 95% of the total mass and energy (in other words, everything) in our universe, according to current evidence--and we can't understand determine what it really is. Another way of looking at it is to took around the room you are in and realize that 95% of what's there right now is totally "invisible" to you--and you're full of it. (Some will probably say I am that, too.)

wdwyer Level 5 June 13, 2018

There is M Theory/Brane Theory, which is a product of string theory. I like the neatness of it.

There really is no alternative to BB theory at this point. All of the evidence points to it.


Some version of the big bang probably happened, but I think there is probably much more to it that we don't and may never know the details of.

MsAl Level 7 June 13, 2018

Multiverse hypothesis = Big Bang still happened
Smaller explosions = Big Bang still happeneed
Simulaton hypothesis = Big Bang still happened

String Theory isn't an origin theory, it's just theory of trying to understand particles and how they interact in our universe.

The big bang is the only theory we have at the moment that is demonstrable true. Anything more than that is just a hypothesis.

But CREATION!!!! D'uh! XD


Because Christians can not figure out how the universe began they like to say "God did it." But have "faith" .....eventually SCIENCE will supply the answer.


Iโ€™m not sure the Big Bang theory is much of an explanation myself.




The origin of the universe is not a question that has ever cost me any sleep. We are here and this is happening: okay, then.

Deb57 Level 8 June 13, 2018

All are theories and can never be proven with 100 percent certainty, unless someday we create a universe based on one of those theories in a lab.

You have to start somewhere though. We were going to be curious about space and how it works eventually. I think it says something about humanity that we've been able to send people into space without fully understanding it.

Absolutely nothing whatsoever is % certain. There is no actual need for % certainty. In general the preponderance of evidence leans heavily one way or the other and that's good enough for our purposes. Rejecting the best available explanations when the evidence for them is excellent never ends well.

The BB theory fits well with most aspects of observed reality and where the abstraction leaks there are reasonable hypotheticals to explain it. The BB theory is subject to refinement and isn't as settled as, say, the Theory of Evolution, but it is the accepted cosmological model and is very unlikely to be totally discarded due to future discoveries.

One common misconception about the BB is that it explains the origin of the universe. It doesn't; it assumes the existence of matter and energy as a starting point (though not time as we know it). It really just describes what we can observe about the past universe back to our event horizon and the limits of our mathematical models -- and to the "beginning" of time. It inherently can say nothing about what, if anything, lies beyond those boundaries. And it does not require a First Mover or other "cause" because those concepts have no meaning "before" time.


Several of the alternatives you listed could be part of the big bang model, just that the scale would be even far greater than what we know. The multiverse, if it exist, could be multiple big bangs same as the one theorized. The question in mind mind would be if they exist in the same physical realm (i.e. if we could literally travel beyond the bounds of our universe and get to another) or not (physically impossible as the universes exist in different "realms" ). String theory is part of the big bang theory. Simulation is a wash because there would have to be a universe within which some entity had the means to create this simulation, albeit it may be a far different universe than what we know. The notion of scale is abstract; our universe is as big as it is, and any other existing universes or other realms would merely add to that, unless, as suggested by quantum physics, they occupy all the same realm.

Meanwhile, I'm still trying to get the attention of the woman next door.

godef Level 7 June 13, 2018

Our minds are limited to the space/time/matter model, which is nothing but illusion. Questions about when and how the universe sprang into existence can not be answered with that model, and from a higher perspective the questions are simply not meaningful.

I am just reading โ€œReality is not What it Seemsโ€, by Carlo Rovelli, a physicist who is working on the theories of quantum gravity. According to Rovelli, time does not exist.

The experience of reality is truly awesome and thrilling and joyous, but the implications are baffling in the extreme.

I'm gonna get that book, it sounds interesting.

Rovelli must have been a busy guy. Sometimes I get busy and feel there is no time.


I'm something of a fan of version of the anthropic principle based upon the Heisenberg uncertainty principle and Niels Bohr, conception that physical existence is reliant on measurement and observation, therefore physical existence and consciousness are reliant on each other.
That which is observed requires an observer in order to be observed and therefore exist, the observer requires an observer in order to exist and observe.

Therefore self awareness of being is the root of everything,

Awareness is observation
Observation is measurement
Measurement brings about existence (including time and space)
Existence becomes aware
The circle is complete.

The most efficient way to achieve this is Sentient Life.

Well said! I lean toward thinking that conscious awareness is primary in reality.


The "beginning" of the universe is the most mind boggling concept to me. On one hand, how could it have been here "forever"? On the other hand, how could something spontaneously "arise" from nothing--or evolve from nothing? How did the elements of its creation exist as they, too, would have arisen from "nothing"? Multiverses do not explain these issues. Perhaps there was a big bang, but that leads back to the original issues of something from nothing.

I sometimes lie awake at night, pondering these questions.

Try considering the word forever as a temporally reliant word, that only has meaning in a universe where linear time exists.
Step outside of time and picture the whole of of time and space as something static not moving, a ball of potential, self sustaining, self created, self aware.
All that is, was and will be, constantly present, unchanging and complete, within which is every potential outcome, every action and in action including it not being there at all.

Now imagine you can don a suit that is called time, wearing this you can enter the ball and move around it, interact with it in sequential sets of events, see thing as the inhabitants see them.

This thing IS it never WAS NOT, never will not be, because time exists only within it, not outside of it.

The big bang is simply at its core, it's out shell though seen with in as the end, is just another part of the eternal whole.

Take time out the equations and see if that allows you to comprehend existence objectively.

@LenHazell53 Oh, I am well aware that linear time only applies to those of us who live on planets that revolve around stars. In light of eternity--regardless of how one defines "eternity"--time has no meaning: it does not exist.

That still does not lessen my bogglement.

Time exists as much as space exist. For you are correct, time requires some repeatable measure to give it substance, to set up a metric... like revolving planets or repetable events.

However space also requires some repeatable measure to give it substance... two permanent objects upon which we can set up a metric, like two objects a distance apart or a solid object.

So yeah, time and space don't exist in the sense that you can't touch it or see it... but time and space do exist insofar as any creature with access to repeatable events or permanent objects can, and I posit will, come up with a metric they call time and another they call space.


Many people say that trump did it. And it's the best universe, this I can tell you.




I subscribe to the Multiverse Theory


Big bang theory makes good sense to me.
For fire is the beginning source of all life and matter. The iron in our blood can be found throughout the galaxy and our bodies is balance heat and particles of metal energy . About 99โ„… of earth mass can melt metals. The earth is cooler than the sun and the sun is cooler than the stars. We are stardust children of the stars.


A great being sneezed

Simon1 Level 7 June 13, 2018

or farted... haha

@blueskies not enough matter to much gas lol

@Simon1 i guess that depends on the fart? hahahaha ewww ๐Ÿ˜ฎ

@blueskies shart??? Lol yup I just went there

@Simon1 bahahahahaha... too funny


It is fun to speculate about such things. I think most mainstream theorists actually hold something of a "multiverse" view these days. I don't think that a theory that "the universe started from different smaller explosions" works very well as it doesn't explain two very significant and curious observations.

The flatness and horizon problems.

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