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Thread: Big Bang is down!

  1. #11
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    It seems to me that much of the interest in dark matter is based on the presumption that the universe is expanding. The idea that the universe is expanding makes us wonder how long the expansion will continue. And also wonder if it could ever start contracting. Answering these questions leads to an interest in dark matter. Maybe if we knew the amount of dark matter and if we added to that the mass of light emitting stars, it that would be a basis for making calculations about the supposed expansion. If instead of an expanding universe we assume a more or less steady state universe then my guess is that most of the interest in dark matter would evaporate.

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    Well don't know the total mass of the dark matter, but we do know that nearly all of the weight of a galaxy is dark matter

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    Insofar as the basics of the big bang goes, I think it's important to simplify it and point out why a "big bang" is implied by the evidence. We can see that the universe is expanding so you simply run the clock backwards and you get a universe that gets denser and smaller until you reach a point where the laws of physics as we know them break down. Quantum fluctuations become universe shaking phenomena and relativity loses its smooth spacetime fabric. In other words, there is very sound and even elementary reasoning for the big bang theory and it has held up under much scrutiny over the years. When you get into what "happened" before the big bang you get into some cutting edge cosmology theory. There are basically two schools of thought right now on a "theory of everything". String theory (M-Theory) and Quantum Loop Gravity. Both of these are interesting and you should check out some books or google them.

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    Default Re: Big Bang is down!

    the big bang theory does not state that the universe started from a particle. it states that the universe originally was a singular point in 'space', if i might use the word, cos according to scientists, space did not exist before the big bang. the universe was a singular point until something upset the balance of that point, causing it to 'blow up' and expand into the universe as we know it. the fact that the universe is expanding at a rate faster compared to billions of years ago, shows that actually something like the big bang did happen. even though the big bang theory has many loopholes now, i believe the universe was started from something or somewhat similar to the big bang.

    pls dont flame me, im just a kid

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    Default Re: Big Bang is down!

    This thread, to me, is somewhat obsolete. Let's just that I've learned alot on this topic since when this thread was started.
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    Default Re: Big Bang is down!

    Quote Originally Posted by Celestron View Post
    Hey,

    The big bang theory is really bizarre. scientists think that the universe came from a particle. where in the world (maybe Universe), did the particle come from? it's silly! whos out there that agrees with me?
    Is this a joke? The Big Bang theory does *not* claim that the universe came from a particle. Where do you get your information from? Kent Hovind?

    What you are doing is claiming that a that a scientific theory that has withstood almost a century of study can be disproven in one sentence... This wouldn't be a problem if you actually had knowledge of the subject and evidence for your claims, but you show a level of knowledge lower than you would get if you would just read Wikipedia.
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    Default Re: Big Bang is down!

    OK. The policy of the Astronomy Forum is that we are a friendly bunch of folks. People are free to express their opinions but let's keep it civil. This thread is several years old. The person originating it has stated that it is obsolete. There is no need to flame him. No more warnings.
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    Default Re: Big Bang is down!

    Its their way of saying we just dont know.

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    Default Re: Big Bang is down!

    I didn't notice the age of the thread. I didn't realize it was obsolete. I'll stop posting on this thread.
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