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Thread: Big Bang's Smoking Gun Found

  1. #31
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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by danarhea View Post
    At the time of the big bang, the laws of physics as we know them today did not exist. Therefore, it is very conceivable that the initial speed of expansion was faster than the speed of light, as we know it today.
    Essentially that is true. Even General Relativity predicts gravity waves (at least low amplitude ones) would travel at c. But the initial expansion of spacetime as excessively quick and there could be compounding effects. Interestingly enough, General Relativity doesn't necessarily rule out faster than light particles.
    Last edited by Ikari; 03-19-14 at 08:39 PM.
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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by danarhea View Post
    Actually, the dark energy and dark matter are what would eventually stop the expansion, and then the big crunch would begin. However, scientists do not believe there is enough of it to slow down the expansion. In fact, the rate of change of the expansion is increasing.
    All current measurements of universal geometry show a value of 1 (exactly flat), which means our universe could theoretically persist forever.
    You know the time is right to take control, we gotta take offense against the status quo

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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by danarhea View Post
    Basically, relativity does not say that space can't expand faster than light. Only objects in that space can't move faster than light.
    The nothingness (space) was already there, it was the energy of the big bang that expanded into it and is still expanding. Since energy has no mass it is no biggie travel as fast as it likes.

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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by Ikari View Post
    All current measurements of universal geometry show a value of 1 (exactly flat), which means our universe could theoretically persist forever.
    All the mass in the universe is being sucked into black holes which will then devour each other. That might not mean the end though.

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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by iguanaman View Post
    The nothingness (space) was already there, it was the energy of the big bang that expanded into it and is still expanding.
    This is not true. Space itself was spawned during the big bang. And it's currently continuing to expand, accelerating even. The big bang wasn't an explosion in the middle of a big empty room. The big bang created the big empty room too.

    Quote Originally Posted by iguanaman View Post
    Since energy has no mass it is no biggie travel as fast as it likes.
    This is not true. Neither energy nor information can travel faster than the speed of light (locally).

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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by Midwest Lib View Post
    Big Bang's Smoking Gun Found : Discovery News



    This is an absolutely astonishing discovery. This brings us one step closer to understanding the creation and expansion of the universe. It's important to mention, for those that are not knowledgable in physics to focus on the importance of the act of expansion and the relation of gravity to it, as opposed to picturing an explosion. It's easy to get caught up a bit in the misnomer "Big Bang" especially since it uses such descriptive (though inaccurate) words.

    Thoughts?
    If you really understand this stuff well I have a couple of questions. This article says

    For the first time, scientists have found direct evidence of the expansion of the universe
    Why isn't the red shift direct evidence of an expanding universe?

    Over and above that why exactly is this so important? What significant insight will be gained from this?

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    Re: Big Bang's Smoking Gun Found

    I was just reading this article. I don't think a person with a physics background wrote this. Perhaps that's why I'm finding this so confusing. This author says big bang explosion. There was no explosion. Perhaps he didn't mean direct evidence of the expanding universe, but direct evidence from the point of the initial expansion of the universe.

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    Re: Big Bang's Smoking Gun Found

    I admit it is interesting to note confirmation of something most already understood as accurate....but do not see it as "Astounding".

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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by the_recruit View Post
    This is not true. Space itself was spawned during the big bang. And it's currently continuing to expand, accelerating even. The big bang wasn't an explosion in the middle of a big empty room. The big bang created the big empty room too.



    This is not true. Neither energy nor information can travel faster than the speed of light (locally).
    Nothingness is nothingness and there is nothing less than nothing. The edge of then universe is the edge of the energy from the big bang. There is nothing in Relativity theory that says things without mass cannot travel faster than light. They don't because then don't have the energy to do it, not because it is impossible

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    Re: Big Bang's Smoking Gun Found

    Quote Originally Posted by iguanaman View Post
    Nothingness is nothingness and there is nothing less than nothing. The edge of then universe is the edge of the energy from the big bang. There is nothing in Relativity theory that says things without mass cannot travel faster than light. They don't because then don't have the energy to do it, not because it is impossible
    You have no idea what you're talking about. A simple visit to wikipedia would correct most of your misunderstanding here - if you truly have an interest in understanding any of this stuff you're babbling about.

    The choice is yours, I know better than to sit here and try to force a horse to drink water.

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