Some questions about the Big Bang theory?

Question

This comes up sometimes over in the religion and spirituality section, so I thought I'd come over here and see what people have to say.

First of all, from my understanding of what the Big Bang is, it would not have been an explosion as we may think, but instead, an "implosion of matter," or an expanding of everything within the universe. Now, if I am contorting anything, I apologize. However, my reason for bringing this up is that some over in R & S state that the Big Bang is a problem because we see a dark universe, and therefore question why we don't see the light from the Big Bang. But, if it was not an explosion in the literal sense, would this still be a problem? They also cite dark matter as a problem. Again, how would this tie in?

Any answers as well as references would be appreciated. And again, if I have misrepresented any facts, I will apologize in advance.

Answer 1

Well, we do see the light from the big bang, sort off. There is what is called the cosmic microwave background radiation. This corresponds to the flash of the big bang after 12.7 billion years of cooling off. So whoever brings up that issue in an argument in the "religion and spirituality" section should pay us a visit here in "science and mathematics" from time to time, or risk remaining ignorant of such things, and exposing his ignorance in a most ridiculed way.
As for dark matter, its presence is the consequence of observations not jibbing all together. We observe galaxies, and from the amount of light, get a fairly good idea of how many stars they contain, and thus how heavy they ought ot be. But the problem is, the orbiting speed of stars in the galaxy does not match with that mass, so there must be something that cannot be seen. So, the conclusion is that there is something there with mass, that is dark, in the sense that it does not and will not eventually be part of a star, so it is a different type of matter that does not interact with the matter that we can experience, except indirectly through gravity.

Do not appologize for not knowing something; no one is born with science, one has to acquire it. You had at least the humility of accepting that you did not know something, and the courage to seek out the truth.
If you have further question, do bring them up. You can also explore cosmology by reading section in Wikipedia (starting by the link provided). It can be a long and difficult journey, but you will be a better person from taking it, with an open AND critical mind.

Answer 2

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RE:
Some questions about the Big Bang theory?
This comes up sometimes over in the religion and spirituality section, so I thought I'd come over here and see what people have to say.

First of all, from my understanding of what the Big Bang is, it would not have been an explosion as we may think, but instead, an "implosion of...

Answer 3

The big bang was not an explosion OR an implosion - it was an expansion. Like blowing up a balloon as opposed to popping it.

We DO see the light from the big bang. When it first expanded, it was very hot, and it cooled over time as it expanded further. The initial heat radiation is still left over, and is known as the Cosmic Microwave Background. It's about 3 degrees Kelvin, and permeates space.

Dark matter is something else entirely. It's out there, but it doesn't interact with normal matter, so it's very difficult to see. All we can see so far are the gravitational effects.

Answer 4

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Answer 5

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Answer 6

Let me suggest the book "A Brief History of Time" by Stephen Hawking. We may not be seeing light YET from the Big Bang, because we do not know the size of the universe, nor do we know where matter was originally compressed. Theoretical physics tells us the universe looks the same all around no matter where you're at in it - and we see the universe as it existed in the past - the light from stars long burnt out is still reaching us. So as far as actual "light" from the Big Bang - it was not an explosion, but was an expanding of dense matter. The affects of the Big Bang that we see are the ever-expanding universe around us.

Kind of rambling I know, but I'm just reading this book myself and thought I'd throw in some thoughts. I'm no scientist though!

:)

Answer 7

> we see a dark universe, and therefore question why we don't see the light from the Big Bang.

We DO see light from the Big Bang!

That is *precisely* what the "background radiation" is.

It would be silly to imagine that the frequency of this radiation would *have* to fall in the thin sliver of the electromagnetic spectrum that our eyes happen to respond to, or that it would be bright enough for our eyes to see as "light". But it is indeed electromagnetic radiation (which is what light is).

So the creationists have correctly made a prediction that would be true of the Big Bang ... that prediction has been borne out. What do they say now?

Answer 8

" Why we don't see light from the big bang ". I see that was cleared up for you by resident physicists. My point being, that rather than coming to an uneducated conclusion, that first you educate yourself. Tell your friends in R & S that, though it may do no good. At least you may be salvageable. Follow the links given and learn.

PS Can you tell your friends in R & S not to keep coming over to biology with the same ignorant questions? Such as; " If man comes from monkeys, why do we still have monkeys around "?

Answer 9

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Answer 10

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Hi CAustin! A great Q. A faith? Kind of, but not really. Part of my "belief system", yes. I would say on average about 1/3 of all human's belief systems come from what they "are taught". So my belief in a the "Big bang" comes partially from what I've been taught. Also, I would say that about 1/3 of human belief comes from what they "Know" or "fact". In other words, some things are just plain, "on their face" true. Like 1+1=2. That is a fact, and you can always get some kook to disagree with that, but it's still true. The "Big bang" theory is not this kind of a belief though. We just cannot call it a fact as of yet. The numbers are a bit more complex than that. And as for "personal desire" and belief systems. I would say on average 1/3 of human beliefs come from personal desire, or in other words, they would just like it to be true (i.e. a wishful thought). Mr. Smoot, the Nobel peace prize winner (2006 physics, and extensive writer on the theory) notes that the "Big bang" theory states that the universe went from the size smaller than a pea, to a size larger than we can currently see, in a period of time shorter than we can measure. And if this isn't creating a big something (the universe) out of nothing (something smaller than a tiny pea) instantly (in less than a hundred billionth of a second) then I am not sure what is. Even Smoot says it appears "Science and religion are coming together" (and he is not a believer as far as I know). In other words, it would appear that the universe suddenly leapt into existence out of nothing, as if it were created from nothing. I'll admit it, I'll believe it because it sounds good to me, not just because of the facts, but because it is easy on my brain. No cognitive dissonance, no conflict to my paradigm, and I base it on an "appeal to authority" argument (which technically comes under the area of a false argument). But most arguments made for belief systems *are* based on the authority of others, or the veracity of prior witnesses to the fact. Smoot seems credible, so I'll go with him for now. But I will not argue semantics. The definition of faith does and can mean simply "belief", and it can have the connotation of "trust" (i.e. trusting the veracity of another witness like Smoot, or the ancient attorney Saul of Tarsis or who-ever, etc) but it relies more on "hope" than "trust". And I would classify all belief systems in the same category, whether they be supernatural or not, as they all come from the same sources whether people like to admit it or not. So I would argue that even though it is part of my "belief system" (and "faith" is a sub category of "belief system") I have not placed any "hope" on that theory, so it is no a true "faith". There is some "trust" there though, but not enough to push it into the faith category. In other words: Belief System = Sum of all beliefs Belief = Indoctrination + Facts + Desire Faith = Belief + Hope Belief in the Big Bang (for me at least) = Belief + Trust Trust is related to hope, but it is not quite the same. Your question is a good one in that it brings out alot of concepts that blend into one another, there are no hard lines in this matter. Belief, faith, hope, trust, desire, indoctrination , and facts all blend into one another and they are difficult to distinguish. And what we are taught by others must be tested or else we fall into the trap of placing our hope on the false desires of another person. I've been reading you're Q&A for awhile, my apologies for running on with my first answer to one of your Q's, but it's a hard topic to pin down with a good answer.