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"Al Klein" wrote in message
... On Mon, 23 Oct 2006 15:50:49 GMT, "Martin McPhillips" wrote: What is before T = 0 should read what is before CST (our conventional space-time) = 0, and the answer is Before you formulate an answer, answer another question: Your evidence that time, itself, isn't a property of the current universe, is? I didn't say that time, itself, isn't *a* property of the universe. But if the universe began as something material, that material something had duration prior to the big bang or it wouldn't be something. So, obviously, in contexts unknown to us, in its material duration, it had intervals that passed into and became the intervals of the big bang which became the intervals of our conventional space-time. Time is duration. In our conventional space- time, it is tied, as the term space-time implies, into just that, our *conventional* space-time. At the moment of the big bang, however, that was not the case, if cosmic inflation is correct, because the observable universe reached that size in one trillionth of a trillionth of a second, which means that the expansion took place faster than the speed of light, which means that it occurred outside of our convention of space-time, wherein the speed of light is the fastest speed. So, there we have an example, in cosmic inflation, of *a* space-time, measured only in trillionths of a second in its total duration, that is different than the one that we see in the universe now. We have no information about what sort of duration occurred before the big bang with the primordial matter that became the universe at the big bang, but if it was matter it at least occupied its own space and had its own duration within that space and that duration was time in that context. |
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"Al Klein" wrote in message
news ![]() On Mon, 23 Oct 2006 11:13:47 GMT, Giant Waffle wrote: The universe had a beginning. Evidence? Cosmic microwave background radiation, which was predicted by the big bang theory and has since been found and mapped. "Big bang" was originally a pejorative term given to the theory by the astronomer Fred Hoyle who rejected the theory. Many astrophysicists and astronomers held fast to the universe as a steady state phenomenon that had always existed. The "conventional" Big Bang theory had the thing happening, basically, like an explosion, but that kind of explosion was completely at odds with the "flatness" of the universe, which included most especially the evenness of its thermal distribution. It was Alan Guth who first proposed the theory of cosmic inflation, circa 1980 (I could be off by ten years there, without checking), which posits a, to say the least, very remarkable period of "inflation" during which the universe expands to the size of the observable universe in an instant, which explains the equally remarkable evenness, or flatness, of the universe. Subsequent satellite data continues to confirm cosmic inflation. |
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On Mon, 23 Oct 2006 23:25:41 +0200, while bungee jumping,
Gamma shouted thusly: In article , Giant Waffle wrote: On 22 Oct 2006 20:44:52 -0700, while bungee jumping, "steve" shouted thusly: Where lots of scientists go wrong is after excepting that the big Bang took place they extrapolate to say that this was the start of the universe in both space and time. Just because we have so far not been able to see what happened before this big bang does not mean that there was nothing. For all we know big bangs are happening all over the place and throughout time. Just because we can not see or detect the others (yet) does not mean we can assume that they did not take place. Maybe the universe did start with a big bang but it was very unlikely to have been this current one that we see. The universe is everything remember. I see no reason to put bounds on the age or size or dimensions even. You seem to have made a god of the universe. The universe had a beginning. So now the question is, who or what began it? Weren't you paying attention? It was the Big Bang Sure. There was nothingness. So then, nothing expanded and here we are. -- Azaliah (( |
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![]() "Martin McPhillips" writes: "Al Klein" wrote in message news ![]() On Mon, 23 Oct 2006 11:13:47 GMT, Giant Waffle wrote: The universe had a beginning. Evidence? Cosmic microwave background radiation, which was predicted by the big bang theory and has since been found and mapped. "Big bang" was originally a pejorative term given to the theory by the astronomer Fred Hoyle who rejected the theory. Many astrophysicists and astronomers held fast to the universe as a steady state phenomenon that had always existed. The "conventional" Big Bang theory had the thing happening, basically, like an explosion, but that kind of explosion was completely at odds with the "flatness" of the universe, which included most especially the evenness of its thermal distribution. It was Alan Guth who first proposed the theory of cosmic inflation, circa 1980 (I could be off by ten years there, without checking), which posits a, to say the least, very remarkable period of "inflation" during which the universe expands to the size of the observable universe in an instant, which explains the equally remarkable evenness, or flatness, of the universe. Subsequent satellite data continues to confirm cosmic inflation. But the Big Bang implies only that our current incarnation began at that point; it does not rule out such things as a cyclic universe, nor universes -- such as ours -- having been "pinched off" from other, pre-existing universes (this latter seems to be something of a topic of the week among cosmologists these days) All that can be said is that no information from any state which might have existed prior to the Big Bang would have made it thorough that event. If this to you qualifies as "the beginning of the universe", then you can certainly look at it that way. However, it does not automatically imply "the beginning of all that is". A couple of good articles from Scientific American on this are "The Myth of the Beginning of Time (string theory suggests that the big bang was not the origin of the universe but simply the outcome of a preexisting state)", in the April 2004 issue, and "Misconceptions about the Big Bang", February of 2005 -- this last article deals in some detail with your seeming rate-of-expansion- vs-speed-of-light conundrum. -- cary |
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"Cary Kittrell" wrote in message
... "Martin McPhillips" writes: "Al Klein" wrote in message news ![]() On Mon, 23 Oct 2006 11:13:47 GMT, Giant Waffle wrote: The universe had a beginning. Evidence? Cosmic microwave background radiation, which was predicted by the big bang theory and has since been found and mapped. "Big bang" was originally a pejorative term given to the theory by the astronomer Fred Hoyle who rejected the theory. Many astrophysicists and astronomers held fast to the universe as a steady state phenomenon that had always existed. The "conventional" Big Bang theory had the thing happening, basically, like an explosion, but that kind of explosion was completely at odds with the "flatness" of the universe, which included most especially the evenness of its thermal distribution. It was Alan Guth who first proposed the theory of cosmic inflation, circa 1980 (I could be off by ten years there, without checking), which posits a, to say the least, very remarkable period of "inflation" during which the universe expands to the size of the observable universe in an instant, which explains the equally remarkable evenness, or flatness, of the universe. Subsequent satellite data continues to confirm cosmic inflation. But the Big Bang implies only that our current incarnation began at that point; it does not rule out such things as a cyclic universe, That's another topic. |
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steve wrote:
Where lots of scientists go wrong is after excepting that the big Bang took place they extrapolate to say that this was the start of the universe in both space and time. Just because we have so far not been able to see what happened before this big bang does not mean that there was nothing. For all we know big bangs are happening all over the place and throughout time. Just because we can not see or detect the others (yet) does not mean we can assume that they did not take place. Maybe the universe did start with a big bang but it was very unlikely to have been this current one that we see. The universe is everything remember. I see no reason to put bounds on the age or size or dimensions even. If you want to learn more about current cosmological thought, search for "M Theory" or "string theory" PBS occasionally shows NOVA programs about this subject and is a decent primer for this topic. Voracious |
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On Mon, 23 Oct 2006 21:19:28 GMT, "Martin McPhillips"
wrote: "Al Klein" wrote in message .. . On Mon, 23 Oct 2006 15:50:49 GMT, "Martin McPhillips" wrote: What is before T = 0 should read what is before CST (our conventional space-time) = 0, and the answer is Before you formulate an answer, answer another question: Your evidence that time, itself, isn't a property of the current universe, is? I didn't say that time, itself, isn't *a* property of the universe. If it is then nothing happened "before" CST=0, because there was no "before". But if the universe began as something material, that material something had duration prior to the big bang or it wouldn't be something. It needn't have been something until it started to exist. Or can you post some of the physical laws that pertained "before" the universe existed? (Caution - even Hawking can't.) So, obviously, in contexts unknown to us, in its material duration, it had intervals that passed into and became the intervals of the big bang which became the intervals of our conventional space-time. You're making an assumption based on no evidence whatsoever. That we live in a universe with intervals is a fact that can only be applied to this universe. We don't know whether there was a "there", whether that "there" had intervals, or anything else about what conditions, IF ANY, obtained "before" the universe existed - if, indeed, it hasn't always existed and the Big Bang was just a phase change. Or something we're not even capable of imagining. Time is duration. In our conventional space- time, it is tied, as the term space-time implies, into just that, our *conventional* space-time. At the moment of the big bang, however, that was not the case, if cosmic inflation is correct, because the observable universe reached that size in one trillionth of a trillionth of a second, which means that the expansion took place faster than the speed of light, which means that it occurred outside of our convention of space-time, wherein the speed of light is the fastest speed. Since the universe was opaque at that time, the speed of light wasn't the current speed of light in free space. In fact, "the speed of light" at the instant of the universe's formation is a meaningless concept. So, there we have an example, in cosmic inflation, of *a* space-time, measured only in trillionths of a second in its total duration, that is different than the one that we see in the universe now. No, we have your conjecture that there was something with some properties - it may have been, it may not have been. There's no reason to just blindly accept that one possibility. We have no information about what sort of duration occurred before the big bang Or whether ANY duration occurred "prior to" the universe. You're assuming that duration existed in the "whatever" that you're assuming existed "prior to" the universe. If your assumptions are wrong (and there's no actual reason to think that they're correct), nothing you asserted applies. But an assertion based on an assertion that's based on an assertion is nothing to build a conjecture on. -- rukbat at optonline dot net "Speculating on the possible reaction to evidence is no excuse for failing to produce the evidence." - Wayne M. Delia+ (random sig, produced by SigChanger) This signature was made by SigChanger. You can find SigChanger at: http://www.phranc.nl/ |
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On Mon, 23 Oct 2006 21:43:47 GMT, "Martin McPhillips"
wrote: "Al Klein" wrote in message news ![]() On Mon, 23 Oct 2006 11:13:47 GMT, Giant Waffle wrote: The universe had a beginning. Evidence? Cosmic microwave background radiation, which was predicted by the big bang theory and has since been found and mapped. "Big bang" was originally a pejorative term given to the theory by the astronomer Fred Hoyle who rejected the theory. Many astrophysicists and astronomers held fast to the universe as a steady state phenomenon that had always existed. The "conventional" Big Bang theory had the thing happening, basically, like an explosion, but that kind of explosion was completely at odds with the "flatness" of the universe, which included most especially the evenness of its thermal distribution. It was Alan Guth who first proposed the theory of cosmic inflation, circa 1980 (I could be off by ten years there, without checking), which posits a, to say the least, very remarkable period of "inflation" during which the universe expands to the size of the observable universe in an instant, which explains the equally remarkable evenness, or flatness, of the universe. Subsequent satellite data continues to confirm cosmic inflation. So the evidence that the universe had a beginning (not a beginning of the current phase) is? The expansion starts once the universe exists in its current (current since the instant of the Big Bang) form. Was it in some other form before that? Was anything anything before that? What laws applied? Inflation isn't proof of a beginning, only a beginning of the current state of affairs. -- rukbat at optonline dot net "Speculating on the possible reaction to evidence is no excuse for failing to produce the evidence." - Wayne M. Delia+ (random sig, produced by SigChanger) |
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Azaliah wrote:
On Mon, 23 Oct 2006 23:25:41 +0200, while bungee jumping, Gamma shouted thusly: In article , Giant Waffle wrote: On 22 Oct 2006 20:44:52 -0700, while bungee jumping, "steve" shouted thusly: Where lots of scientists go wrong is after excepting that the big Bang took place they extrapolate to say that this was the start of the universe in both space and time. Just because we have so far not been able to see what happened before this big bang does not mean that there was nothing. For all we know big bangs are happening all over the place and throughout time. Just because we can not see or detect the others (yet) does not mean we can assume that they did not take place. Maybe the universe did start with a big bang but it was very unlikely to have been this current one that we see. The universe is everything remember. I see no reason to put bounds on the age or size or dimensions even. You seem to have made a god of the universe. The universe had a beginning. So now the question is, who or what began it? Weren't you paying attention? It was the Big Bang Sure. There was nothingness. So then, nothing expanded and here we are. No, from what I understand of current cosmology, there is a quantum flux that permeates the universe and when conditions are right, a "big bang" occurs. Particles begin to accumulate and form the larger structures we know today. The quantum flux events impart entropy to an area and that entropy winds down over eons back to a neutral state. Voracious |
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On Mon, 23 Oct 2006 23:01:55 GMT, "Martin McPhillips"
wrote: "Cary Kittrell" wrote in message ... But the Big Bang implies only that our current incarnation began at that point; it does not rule out such things as a cyclic universe, That's another topic. It *IS* the point. If the universe is cyclic, the Big Bang is only the beginning of this cycle, not the beginning of the universe. If the universe is both cyclic and eternal, it had no beginning. -- rukbat at optonline dot net "We should do unto others as we would want them to do unto us. If I were an unborn fetus I would want others to use force to protect me, therefore using force against abortionists is *justifiable homocide*." - "Pro-Life" doctor killer and corpse Paul Hill (random sig, produced by SigChanger) This signature was made by SigChanger. You can find SigChanger at: http://www.phranc.nl/ |
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