how large can an object in the universe get? can it get large enough to create the big bang before collapsing? how big was the object that created the black hole in the middle of are galaxy? is that large enough to explain the backround radiation that is from "A" big bang?
2007-11-10
16:19:20
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7 answers
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asked by
lemzia
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Science & Mathematics
➔ Astronomy & Space
the point(s) i am trying to make is this: can anything in our universe get big enough to create the big bang. i dont see any evidence that this can happen.
2007-11-10
16:43:55 ·
update #1
At this point in history, science cannot explain how the big bang occurred because it breaks down when trying to describe singularities, or objects as tiny and dense as black holes. When one tries to do so, one must simultaneously use Quantum Mechanics, because singularities are so small, and General Relativity, because singularities have so much mass. However, these to theories cannot be used at the same time because Quantum Mechanics requires a "rough" description of space while Relativity requires a "smooth" description. Experiments going on at right now at Fermilab and those that will be carried out at the LHC when it is finished will help us move closer to a "Theory of Everything" that will be able to describe singularities.
Though we don't know how to describe how the big bang occurred, we know that it happened. Evidence for it is everywhere, and is not just "made up" by scientists to uphold their theories. The Cosmic Microwave Background Radiation is an especially strong evidence because it was predicted BEFORE it was found, and the "cold spots" in it line up perfectly with the positions of galaxies in the universe today. I would highly recommend reading Brian Greene's "The Fabric of the Cosmos" for more information.
2007-11-11 18:10:15
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answer #1
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answered by Jared S 2
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This may sound contraversal, but i don't believe there was a big bang. Some say that black hole do in fact evaporate magnetically. It could be that the background cosmic noise is created by this evaporation. Maybe one day we will learn that galaxies are forever. Matter falling in and new hydrogen being formed at the outer edge the the galaxtic rim, forming new stars that forge heavier elements that eventually over an untold amount of time find it's way back the the galaxtic centre. Just some food for thought, that all :-)
2007-11-10 16:34:57
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answer #2
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answered by Al 3
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The Big Bang is the cosmological model of the universe whose primary assertion is that the universe has expanded into its current state from a primordial condition of enormous density and temperature. The term is also used in a narrower sense to describe the fundamental "fireball" that erupted at or close to an initial time-point in the history of our observed space time.
Theoretical support for the Big Bang comes from mathematical models, called Friedmann models. These models show that a Big Bang is consistent with general relativity and with the cosmological principle, which states that the properties of the universe should be independent of position or orientation.
2007-11-10 16:43:32
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answer #3
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answered by lenlen 3
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speaking of background radiation... i love how scientist come up with weird theories to explain this stuff. for instance, i think the current prominent theory is that in the instant the universe was supposedly created (did i say created? i mean randomly appeared), the laws of physics did not exist so not only was matter created (instantly) it as strewn about the universe at the speed of light (instantly).
of course, this makes no sense to me for a few reasons. one, many scientist theorize that the universe is expanding outward and will eventually cave back in on itself. if the universe instantly expanded "outwards" at the moment it appeared, why is it still expanding, rather then coming back in on itself? not to mention the fact that objects in motion tend to stay in motion. wouldnt these objects still be traveling at close to the speed of light? im pretty sure they are not...
i have my own theory. of course, im sure it will not be recognized. but has it occured to anyone the universe itself is already infinite, and all the matter in the universe is expanding outward through an already infinite universe? also, has it occured to anyone that the background radiation could be coming from objects so distant, yet so large, that they are not visible with any current insturments but they have been radiating energy since the beginning of time? kinda like looking at the milky way cloud, except perhaps the "background radiation" is a distant cloud of billions of galaxies as opposed to stars? or maybe its billions of distant universes?
and for the record, im not a supporter of creationism either. if anything, i think perhaps some things simply can not be explained....
2007-11-10 16:34:38
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answer #4
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answered by Player 1 2
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The big bang was NOT caused by a collapsing object. Nothign caused it, no tim existed before it (you need to learn quantum hysics to fuly understand this).
The largest object you can get is roughly 120-150 times the size of the sun; this is called the eddington limit. Any star bigger than this whill throw its outer layers off due to radiation pressure.
2007-11-10 17:06:46
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answer #5
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answered by Bob B 7
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the black hole is just like a sink hole...I dunno exactly but the whole big bang, atleast in creation is not credible, although it might end the world when a giant astroid hits the earth, I go to the discovery space center, it is mind boggling....
2007-11-10 16:27:56
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answer #6
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answered by Anonymous
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IDK but the world can be BIG
2007-11-10 18:36:26
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answer #7
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answered by ~Katie~ 2
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