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On Wed, 20 Oct 2004 05:04:21 +1300, "EvolBob"
wrote: Darn it Peter, thats exactly what I was going to say!! In fact this question (again definitely not stupid) resolved a problem I had in visualizing the BB (Big Bang). I couldn't figure out satisfactory how the Universe started without immediately collapsing back into a BH (Black Hole). Clearly the reasoning here had to be the expansion of Space was literally pulling the Universe out of the primeval singularity at a rate faster than light speed. Without this FTLS expansion the Universe would have had nowhere to go - (in the most absolute way imaginable), which would have caused a BH. There is no "speed of expansion" but a "rate of expansion". Also, the inflation theory answer a lot of questions. http://www.ncsu.edu/felder-public/ke...inflation.html Gravity therefore was unable to catch up with enough matter/energy to return to its original singularity state, and still is without normal stellar evolution. This is why the further back we go the faster "That region of the Universe" is moving away from us. Taking this a little further, it also means the tiny bits of atoms or sub atomic particles were being created right outa the energy fluctuations of the intense gravity fields in the first few seconds of the BB. - way cool - no? The process would similar to an analogy of condensation, as this incredible expansion equals fantastic cooling. There is a predicted background radiation temperature of 3 degrees Kelvin, if the Universe is about 20 billion years old and the expansion rate is what it is. And this temperature has since been confirmed, and it is also coming from all directions equally. We are all getting a very light microwave tan. Regards Robert "Peter Webb" wrote in message u... "Albert" wrote in message ... Thank you, but I cannot find any answer in the web site. We see the light from the sun which was emitted 8 minutes ago. The light emitted 10 minutes ago cannot be seen. The question is at what distance are we from the point of big bang ? If it is 10 billion light years, then we can see what happened in the past at that point 10 billion years ago, but there is probably nothing left there. The matter has gone away, and the interesting information has travelled past us during the travel to reach a distance of 10 billion light years ... Firstly, the big bang happened everywhere simultaneously - there was no centre. The standard analogy is that of a balloon being inflated from a point - any point on the surface could be considered as the centre of the expansion. If you imagine a dot on the balloon, at the start all of the balloons surface is right next to the point, and as the balloon expands it appears (to anybody at the point on the ballloon) that all otheer points are receding away from it. Any point on the balloon can equally well be considered the centre. So which ever way you look you are looking in the direction of the centre of the big bang, and if you look far enough (back in time) you are seeing the big bang itself. As to the distance away it is, same argument. If the big bang happened 15 billion years ago, and you look in any direction, what you will see 15 billion light years away is the big bang. Its actually a little more complicated than this, as you may imagine, but this is the basic argument. HTH Peter Webb --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.773 / Virus Database: 520 - Release Date: 05/10/2004 ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- Have a good night! Benoît... |
#12
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On Wed, 20 Oct 2004 00:14:52 +0200, "md" not given to avoid spam
wrote: "Albert" wrote in message ... Can someone help me understand this ? The powerful telescopes are supposed to see in the past. OK, I get thet. If you look at a distant star, you catch the light it emitted one year ago if it is at one light-year distance. But you cannot see the light it emitted 2 years ago, for that light has already travelled past you. Correct ? Now, some say they can watch light coming from stars created just after the big bang. This I cannot understand, because that light should have travelled past us already, from the original point. Please explain ... after the big bang (or during), space expanded at higher than lightspeed speed. That is called the inflation era. http://www.ncsu.edu/felder-public/ke...inflation.html Have a good night! Benoît... |
#13
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Have a good night!
Benoît... Got balls? _______ Blog, or dog? Who knows. But if you see my lost pup, please ping me! A HREF="http://journals.aol.com/virginiaz/DreamingofLeonardo"http://journal s.aol.com/virginiaz/DreamingofLeonardo/A |
#15
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if you climb into your eyepiece you can go back in time
"Albert" wrote in message ... Can someone help me understand this ? The powerful telescopes are supposed to see in the past. OK, I get thet. If you look at a distant star, you catch the light it emitted one year ago if it is at one light-year distance. But you cannot see the light it emitted 2 years ago, for that light has already travelled past you. Correct ? Now, some say they can watch light coming from stars created just after the big bang. This I cannot understand, because that light should have travelled past us already, from the original point. Please explain ... |
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