What Triggered The Big Bang? - Science/Technology - Nairaland
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| What Triggered The Big Bang? by taurus25(m): 8:21pm On May 25, 2016 |
In the beginning, there was a question mark. All else followed. The end. We've all heard of the Big Bang theory (I'm talking about the cosmological model, not the TV show), but it's important to understand what that theory is and what it's not. Let me take this opportunity to be precisely, abundantly, emphatically, ridiculously, fantastically clear: The Big Bang theory is not a theory of the creation of the universe. Full stop. Done. Call it. Burn that sentence into your brain. Say it before you go to sleep, and first thing when you wake up. The Big Bang theory is a model of the history of the universe , tracing the evolution of the cosmos to its very earliest moments. And that's it. Don't try to stuff anything else into that framework. Just stop. You can keep your meta safely away from my physics, thank you very much. I'm emphasizing this because there is a lot of confusion from all sides, and it's best to keep it simple. The Big Bang theory is a scientific model, just like any other scientific model. We believe the theory is on the right track because it's — gasp — supported by extensive evidence. You don't have to take my word for it. Since the idea was first cooked up, the Big Bang theory has survived decades of scientists fighting, scratching, backstabbing, criticizing, undermining, bickering, arguing and even name-calling, all in an attempt to crush their rivals and prove that their pet alternatives were superior. Why? Because whoever takes down a major scientific paradigm gets a free trip to Stockholm. And at the end of it all, there's the evidence. You know, the actual universe that we're trying to understand. Any new observation is the scientific Thunderdome; two theories may enter, but only one can leave. And what was left after decades of evidence? Here's a hint: It's big. to be continued....... source: http://www.space.com/31192-what-triggered-the-big-bang.html 2 Likes 1 Share |
| Re: What Triggered The Big Bang? by Cutehector(m): 8:22pm On May 25, 2016 |
Hogwash |
| Re: What Triggered The Big Bang? by taurus25(m): 8:23pm On May 25, 2016 |
The evidence starts with Edwin Hubble's note that every galaxy is, on average, flying away from every other galaxy. The universe is expanding. That itself is a pretty big deal. For millennia, the default assumption (can you blame anyone?) was that, while things change here on Earth, up in the distant heavens, stuff just sort of… is. Yeah, stars may blow up or galaxies may collide, but on the whole, the universe from last week looks pretty much like the universe today. Check again in a month? Yup, the same universe. At least that's what people thought. But it's not. The universe today is different from how it was yesterday, and it will be different tomorrow. And it's not just on local scales; the whole shindig changes character one day to the next. And if you notice that, every day, the universe is getting bigger, you can make a tremendous leap of logic to come to the conclusion that, long ago, the universe was … smaller? Maybe? I guess? Like any good scientist, as soon as you cook up this kind of ridiculous, preposterous concept, you start thinking through what the consequences would be and how you might test it — I know, radical notions. Here's the gist: The story of the past 14-ish billion years is a story of density. The universe is made of lots of kinds of stuff: hydrogen, helium, aardvarks, dark matter, gristle, photons, Ferris wheels, neutrinos, etc. All this stuff behaves differently at different densities, so when the universe was smaller, one kind of thing might dominate over another, and the physical behaviors of that thing would drive whatever was going on in the universe. For example, nowadays, the universe is mostly dark energy (whatever that is), and its behavior is ruling the universe — in this case, driving a period of accelerated expansion. But a few billion years ago, the universe was smaller, and all the matter was crammed more tightly together. And by virtue of its density, that matter was the ruler of the roost, overwhelming dark energy, which was just a background wimp rather than the powerhouse it is now. (Side note: The dark energy takeover happened at about the same time our solar system was getting its stuff together, and at the time, the universe was about half its present size). 2 Likes 2 Shares |
| Re: What Triggered The Big Bang? by taurus25(m): 8:55pm On May 25, 2016 |
Cutehector:would have taken you seriously if you had read before commenting 1 Like 1 Share |
| Re: What Triggered The Big Bang? by taurus25(m): 9:04pm On May 25, 2016 |
The birth of the Dark Energy Age might not seem that dramatic, but the further back you go in time — and the smaller you make the universe — the stranger it gets. Push back more than 13 billion years, when the universe was just one-thousandth of its current extent, and the matter that would one day make up entire galaxies is crammed together so tightly that atoms can't even form. It's so dense that every time a nucleus ropes in an electron, a careless high-energy photon slams into it, ripping the electron away. This is a plasma, and at one time, the entire universe lived like this. Fast-forward to the present day, and the leftover light from the era, when the universe cooled and expanded just enough to let the first atoms form, continues to wash over us right now. But the universe is older and colder, and those high-energy gamma rays are now listless microwaves, creating a background permeating the cosmos — a cosmic microwave background, or CMB, if you will. The CMB is not only one of the major pieces of evidence for the Big Bang (it's a baby picture of the universe…what else could you ask for?), but it's also a window to even earlier times. We may not be able to perceive the universe before the formation of the CMB, but the physics there leaves an imprint in that radiation field. It's, well, kind of important. The further we push back in time, the stranger the universe gets — yes, even stranger than a plasma. Push back further, and stable nuclei can't form. Go even further back, and protons and neutrons can't stand the pressure and degenerate into their components: quarks and gluons. Push back even further and, well, it gets complicated. The Big Bang theory can be summarized thusly: At one time, the entire universe — everything you know and love, everything on the Earth and in the heavens — was crushed into a trillion-Kelvin ball about the size of a peach. Or apple. Or small grapefruit. Really, the fruit doesn't matter here, OK? That statement sounds absolutely ridiculous, and if you said it a few hundred years ago… Well, I hope you like barbecues, because you're about to be burned at the stake. But as crazy as this concept sounds, we can actually understand this epoch with our knowledge of high-energy physics. We can model the physics of the universe at this early stage and figure out the latter-day observational consequences. We can make predictions. We can do science. 2 Likes 2 Shares |
| Re: What Triggered The Big Bang? by taurus25(m): 9:09pm On May 25, 2016 |
At the "peach epoch," the universe was only a tiny fraction of a second old. In fact, it was even tinier than a tiny fraction — 10^-36 seconds old, or thereabouts. From there on out, we have a roughly decent picture of how the universe works. Some questions are still open, of course, but in general, we have at least a vague understanding. The further along in age the universe gets, the more clear our picture becomes, but it's almost frightening to consider that our poor monkey brains are even contemplating such early epochs in the universe. At even earlier times, though, our understanding of the universe gets … fuzzy. The forces, energies, densities and temperatures become too high, and the knowledge of physics we've cobbled together over the centuries just isn't up to the task. In the extremely early universe gravity starts to get very important at small scales, and this is the realm of quantum gravity, the yet-to-be-solved grand riddle of modern physics. We just flat-out don't have an understanding of strong gravity at small scales. We. Just. Don't. Earlier than 10^-36 seconds, we simply don't understand the nature of the universe. The Big Bang theory is fantastic at describing everything after that, but before it, we're a bit lost. Get this: At small enough scales, we don't even know if the word "before" even makes sense! At incredibly tiny scales (and I'm talking tinier than the tiniest thing you could possible imagine), the quantum nature of reality rears its ugly head at full strength, rendering our neat, orderly, friendly spacetime into a broken jungle gym of loops and tangles and rusty spikes. Notions of intervals in time or space don't really apply at those scales. Who knows what's going on? There are, of course, some ideas out there — models that attempt to describe what "ignited" or "seeded" the Big Bang, but at this stage, they're pure speculation. If these ideas can provide observational clues — for example, a special imprint on the CMB, then hooray — we can do science! If not, they're just bedtime stories. 1 Like 1 Share |
| Re: What Triggered The Big Bang? by taurus25(m): 9:32pm On May 25, 2016 |
Cc Teempakguy sirwere johnydon22 valentinemary cloudgoddess urahara LoJ mrphysics donnffd rhizoidz And all.... 1 Like 1 Share |
| Re: What Triggered The Big Bang? by Nobody: 10:04pm On May 25, 2016 |
I would like to explain this like I was explaining to a 5 years old in order to avoid some complexity in the explanation. When am done and you still don't get it, quote and ask questions on where you lost. Yes, The Big bang occured, 3.7billions years back and you could still see the effects around you and even in today's universe with a hubble space telescope. As a matter of fact, you a fragment/pieces of the universe because you emanated from exploded star(star dust), so what triggered the bang? First off, you need to realize energy is infinite. For some reasons energy is like a prerequisite to driving other forces on earth. It all started like an atom that started to enlarge prior to heated intense energy now what really occurs in an atom? Matter and anti-matter cancelling each other out and so the energy is what is generated to have brought about the rapid expansion, it got super expanded with it high intensity and exploded, BAAAAMMMM! at that moment the universe was born and that was the big bang. So why did the big bang cause the universe to occur? The reason is, At the moment of the explosion, not all matter successfully cancelled out anti-matter, one matter was enough to bring about the universe and here we are today. 2 Likes |
| Re: What Triggered The Big Bang? by taurus25(m): 10:19pm On May 25, 2016 |
aaronson:nice thought. ..but this is only a hypothesis. If you did read the article, many more like this has been proposed by scientists but theres no emperical evidence to back them up. So the whole point was, as to what caused the big bang, physics doesnt really fully understand yet. |
| Re: What Triggered The Big Bang? by Nobody: 10:36pm On May 25, 2016 |
taurus25:Hypotheses are untested variables while theory is a tested and empirical fact, that's why its called the big bang THEORY. The solar system, Einstein time dilation, moon, your radio and tv white noise, Gravity, Electricity, Magnet, Ocean tides and current, Lightning and thunder, stars, Atmosphere, Life(you) etc. Are all proof of the big bang. Now if those are too difficult for you to understand, I have a much simpler version which primitive people uses to define origin of the world and it's the bible creation story and god. I recommend that to you if your brain isn't advanced enough to accept the bigbang as a theory. 1 Like |
| Re: What Triggered The Big Bang? by taurus25(m): 10:47pm On May 25, 2016 |
aaronson:Are we on the same page here?  . I actually do accept the big bang as a theory. As for the biblical creation story, sorry ill pass.Did you read everything first of all.? |
| Re: What Triggered The Big Bang? by donnffd(m): 6:58am On May 26, 2016 |
Nice article taurus25...precise and detailed As for me, i dont subscribe to any of the hypotheses that has been brought forth e.g multiverse hypothesis, big crunch hypothesis. Presently we have no way to probe the earliest universe, and until we do, many of these are just what they are, hypotheses. I really hope we find it out during my lifetime but if not, i still die a happy man knowing my atoms were created at that point(13.7billion years ago) in the universe history. 1 Like 1 Share |
| Re: What Triggered The Big Bang? by ValentineMary(m): 10:54am On May 26, 2016 |
taurus25:Actually it is now a tested empirical fact that from a vaccum, we can generate anti matter and matter as long as we mimic that hot singularity state of d universe. It was done in the university of Liverpool. And the energy from it's anhiliation is what spread d universe. But there was a slightly higher fraction of matter to anti matter that fraction is enough to from a galaxy. But that does not explain d large universe. So my personal hypothesis from their findings is that the energy that was gotten from d anhiliation of anti matter and matter condensed to form matter following Einstein equ E= MC 2 · But there are still loopholes in this theory but as time goes on and science advances, I am sure we would find more shocking truth about our universe 2 Likes |
| Re: What Triggered The Big Bang? by taurus25(m): 5:03pm On May 26, 2016 |
ValentineMary:well thats interesting...we probe till we know  |
| Re: What Triggered The Big Bang? by Nobody: 9:35pm On May 26, 2016 |
I'm not so much intrested in what caused than as to when the expansion will end and the Crunch will begin  But, on a side note....... What if the Big Bang was started off by a group of an extremely advanced race who lives in another universe/multiverse, depending on where you lean.... What if we're just a little ball floating in their test-tube, being toasted as "a real advancement in Science" and of course, being criticized as "an insult to the Almighty"?? More importantly, what if we eventually create universes of our own  Oh sh!t Hold on...................... The weed has expired 2 Likes 1 Share |
| Re: What Triggered The Big Bang? by samsard(m): 7:06pm On May 27, 2016 |
SirWere:We all love us a good fantasy, dont we? |
| Re: What Triggered The Big Bang? by Nobody: 12:56am On Jun 04, 2016 |
taurus25:Actually, I have no Idea. Neither does any human being in this world. the best we have are guesses. |
| Re: What Triggered The Big Bang? by Nobody: 5:36pm On Jun 08, 2016 |
ValentineMary:link to that research please. |
| Re: What Triggered The Big Bang? by ValentineMary(m): 6:06pm On Jun 08, 2016 |
Teempakguy:ns.umich.edu/new/releases/8167 |
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