Big bang Definition and 916 Threads

Need this for a school project ASAP. I am looking for information that prooves parts of the the big bang theory were real. If possible I will need sources for this. I am giving a debate on wheather or not it is real. I am the pro side. Help much appreciated, thanks.

hi guys, I've read a few articles that say that einstein's general relativity paved the way for the big bang theory. Can anyone explain how they are connected?

As far as I am aware the current theory (most popular) for the creation of the universe was that it arose from a singularity. This singularity exploded (The Big Bang) and created the universe as we know it. Now for all changes that occur, whether it be an explosion, a landslide, an...

How does the BB theory allow for the creation of matter. Bt this I mean the sub atomic particles that make up atoms i.e. the quarks and electrons. From what I have read it seems to assume that they already pre-existed and condensed out of the fireball to form atoms.

It had been my understanding that the big bang model of the universe is a theory of the origins of the structure of the universe in which the expansion of the universe is extrapolated back in time until we arrive at a near-singularity and general relativity breaks down. Accordingly, the big...

Please help - I'm sure there's a simple answer to this question, so any explanation would be very welcome: If you looked out into the night sky with an ultrapowerful telescope, in principle you could see back to the Big Bang no matter which direction you pointed it (suppose for a moment that...

I can't wait for this. I suspect it to be only a short appearance, you know how it is. I wonder if he argues with Sheldon http://www.bbc.co.uk/news/entertainment-arts-17337778 I know some of you may hate TBBT as it stereotypes, I guess. But take it as it is.

Suppose we developed a technology, which is very necessary, that we could travel FTL. Can we reach a point in cosmos from where both the chronological and spatial distance of big bang is same. Will then we be able to see bang happening?

In school we are talking about the big bang, and it made me think. What if the cause of the bang was from a group of galaxies before us, very similar to us, and it was expanding just like our, but then we hit a "border", which caused a reverse action. Making that universe compact together and...

is our universe the unique possible outcome of the big bang regardless of the original state? if not, what are the factors that may change the universe as we know it today? what they mean by (WEYL = 0) as the big bang ?

Obviously before the big bang there was no space and no time, so how comes the big bang singularity itself existed without space and time? do black holes' singularities not need space and time to exist too? or at least in order for them to come and exist there has to be space and time at first place

I have seen it tossed about and I think it is generally accepted, that the universe began as a single dimensional event, at some point gaining a second dimension, then finally a third. Was time present during the entire 'event' as a co-existing diemnsion, fully developed and functional as it is...

I wonder how to apply the uncertinty principle to the big bang?

According to the big bang model, the very early universe was at one time filled with energy. The cosmic microwave background radiation shows that the energy of the universe was very uniform. The deviation of energy in the famous CMB radiation picture taken was on average just 1 in 100,000 the...

As I understand it the big bang happened "everywhere". It was not an explosion of matter, but a rapid and accelerating expansion of the space between matter. This is overcome by local gravity (solar systems / galaxies). If this assumption is correct, is there anything preventing or any theory...

I recently saw a documentary on TV in which Stephen Hawking stated that the universe was 600 lightyears in diameter, 10 minutes after the Big Bang. How can this possibly be true? - the particles and matter making up the outer limits will have had to have traveled at many times the speed of light...

Scientists spend millions of dollars and millions of hours trying to explain where matter comes from. The currently accepted theory is the "Big Bang" yet scientists don't bother to explain where that concentrated point of matter that exploded into what we see today came from. Newton's law...

Would you bet your life on it? Big Bang proof supposedly came from: 1. Redshift 2. Cosmic Background Radiation 3. Deuterium and baryogenesis what else? Is there no other way for them to occur without the Big Bang? but there is this Colliding Branes Theory about two branes...

It's generally accepted that nothing can travel faster than the speed of light (expect hypothetical particles that have yet to be discovered). This is in accordance with general relativity. However general relativity seems to break down momentarily after the big bang because matter must have...

To my understanding, The Big Bang Theory (BBT) is considered the standard, mainstream theory explaining the origin of the universe. I know that there are alternative theories, and my question is, how discredited, fringe, or false are these theories considered, if at all? Alternatively, how...

For simplicity, let's just imagine that our big bang is the only big bang, ever. People always ask me, when did the universe "explode" in the big bang? How long did it take, and what was before it? I always get caught in my own words when they ask, as I have never really pondered these...

I think Big Bang theory is valid because of Inflation theory, it states that universe expanded faster than a light(right?) and that theory can solve the problems that Big Bang had: the Flatness and the Horizon problem. Another reason is Cosmic Microwave Background Radiation, which is first...

If we could find the point in space where the singularity happened would you expect to find abnormalities in space time? Is there a ground zero, where there is no relative motion where everything is rushing away?

Hello, My question is regarding the speed of the Big Bang explosion. As I understand it, within the first 10 minutes of the Big Bang the universe had expanded hundreds of light years (this of course being faster than the Speed of Light). Bringing me to my question, if nothing can travel...

Am I correct in saying that in theory Time, Matter and presumably Energy are compressed to a singularity at the centre of a black hole? If that is so then wouldn't they be "transported" back to the state and position they were in at the very beginning of time. In other words the instant of...

I have been wondering this ever since I was in elementary school and I am hoping for an answer. The time dilation equation for general relativity is time dilation=e^(gh/(c^2)). This applies to any object that has mass, and I am wondering if it also applies to the Big Bang (which has mass). I...

In a recent thread, it is stated that the universe did not start its expansion in a ballistic type event, and it did not expand from a center. Could someone please describe how these things could be so.

Can you give me 3-10 points why you believe in the theory of evolution and/or the big bang? this is independant of any other theories. I'd like it numbered. and just brief points, like a topic and brief explanation of why this makes you believe evolution and/or the big bang to be true. I'll...

Hello. This is my interpretation of what is currently known in cosmology, as regards the low entropy state of the early universe. If it is a poor interpretation, then I apologise, but in all fairness, I can only blame the industry professionals for not explaining the data clearly enough. I am...

I'm just thinking that the fabric of space reminds me of oil on water in my kitchen sink. If the universe itself started in an equilibrium and a random force bounced into this substance just like adding your favorite dish soap to the water. the oil automatically starts to gather create eddies...

Why is the existence of The Big Bang "agreed" upon? From all my research and studies mathmatical evidence shows the existence of Black holes. From some of the most fundamental physics we have our Conservation of Energy and Black holes are at the moment considered points where it is possible...

I'm pretty ignorant in physics, so please help me out. OK... So I was watching the special "How The Universe Works", and the episode was about the origins of the universe. (Lame, I know, but Netflix had nothing else that was interesting). They keep talking about the speed at which the Big...

Is the big bang (referring to the well-established theory of post-Planck time evolution) compatible with any model of a finite universe that isn't spherical in topology? It seems to me that the big bang theory requires that the universe be finite in volume and the only way that seems feasible...

Would it be true to say that if we believe the big bang theory, and we believe the best current theories, then there is no such thing as before the big bang because time was born at the big bang? Accepting that the universe started from a near infinitely dense and hot object smaller then an...

PhD Astronomy Prof: "Paucity of evidence for the Big Bang" an acquaintance of mine who holds a PhD in physics and teaches astronomy at a university says the is "a paucity of evidence for Big Bang theorizing". After I close my gaping mouth how should I respond?

If we can find a galaxy(or anything at all) that is more than 13.7 billion light years away can we say that the big bang theory is wrong? Hubble has already found a galaxy that is 13.2 billion light years away.http://www.spacetelescope.org/news/heic1103

If the big bang occurs at the first moment of time, then how can there be a multiverse?

I am in the process of putting together a presentation on the evolution of the universe for novices and beginners. In addition to the words I will be presenting I would like to include some videos and images that would enhance and elevate the meaning of this kind of story and capture the...

The title pretty much sums up what I am not comprehending. At about the time when atoms stopped forming I am asked to accept that this initial state of the universe was at an exceedingly low state of entropy. Apparently it is due to the immense gravitational force. However my understanding so...

I don't know how to shorten this question. Deep breath: If particles that interact physically and become separated are entangled, then once this was proven through experimentation wouldn't local realism theory have to be false since the universe as we know it arose from a singularity? I...

I apologize upfront due to my weak knowledge on the magnificent science. What i am studying now compared to the cutting edge of science is like a huge giant compared to a small little ant. Recently watched the great video of "through the wormhole", realized that dark energy is expanding the...

I have heard statements made that at the instant of the Big Bang, the entire universe was condensed into an incredibly tiny space (a "singularity"). But I've also heard it said that space-time began with the Big Bang. So the singularity did not exist within a Newtonian absolute space. How, then...

dear all, i want to know that is time exist before big bang , if yes then what is actual origin of time and if no then why expansion(explosion) of universe happen through big bang and why it occur and why explosion took place...it can be separated like bacterias...??

What did spacetime look like some time after the big bang? 1) Euclidian space. Imagine yourself in empty space, no mass, with (x,y,z) coordinates ranging from –infinity to +infinity. Somewhere within this infinite space was a volume with high matter-energy density from the Big Bang. 2)...

The model I have is very simple it is: a(t) = A * (exp(H t) - 1) where H^2 = (8 Pi G /3 ) rho_min and A is just a factor to make a = 1 at the present time t_0: A = 1 / exp(H t_0 - 1) and rho_min is the limiting density of matter in the Universe for large t. The model...

I recently watched curiosity and i have been having a hard time grasping how it describes the creation of our universe. As i understood the theory is that the laws of our universe say that a particle of subatomic or less size can pop in and out of existence and so the universe itself could do...

We can safely assume that Big Bang is the accepted answer to the question "How did the Universe, as we know it today, come into existence ?" I will split my question in two parts - 1) What existed before the big bang ? I know Time and Space came into existence AFTER the Big Bang ; but its...

I recent.y received a polite warning about a 'jumbled" post. I will try and restructure it. My problem is that I do not speak the same language you do. the numbers do not mean to me what they do to you. So I have to use terms or phrases that will convey my thoughts. In simplistic...

hey guys, i started wondering, why can we find microwaves that get back to the start of the universe and can't see a light the gets back to the big bang ? thanks :) .p

So for years now, I've been of Stephen Hawking's opinion that asking what was before the big bang is a meaningless question since its like asking what's north of the North Pole. However, after watching BBC Horizon's What Happened Before the Big Bang, I have to admit that I am a little...