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| Tags: bang, big, blow, final, theory |
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Tom Roberts wrote in message ...
Jim Jastrzebski wrote: (Marcel Luttgens) [...] one should accept that the universe is static. The universe is obviously not "static" since e.g. the moon travels around the earth, not to mention other things that obviously _move_ wrt each other. Yes. It might be _stationary_ though, and most likely it is since nothing that we observe contradicts such a possibility, Not true. While I am not an expert on cosmological observations, there are several observations I know of that contradict any reasonable stationary model of the universe: 1. The redshift of distant galaxies is roughly proportional to their distance away from us. 2. The CMBR we observe has a temperature of 2.7 K; near distant objects it is observed to be much hotter. ... there may well be others AFAIK to explain these in a stationary model requires that one postulate processes that we don't observe to occur locally (e.g. "tired light"). and it may be shown that if principle of conservation of energy is valid then it is almost surely stationary Not true. GR and the FRW manifolds are a counterexample. Maybe editors scientific journals should allow printing papers that assume validity of principle of conservation of energy? Huh??? GR contains the local conservation of energy and papers about it are published quite regularly. Perhaps you don't understand what "conservation of energy" means in modern physics.... But in GR this is not an "assumption", it is a conclusion.... After all Einstein's Field Equations conserves energy automatically and so insisting that the universe is expanding just to prove that energy is not conserved doesn't seem to have much sense, Obviously you don't understand GR. One uses "expanding" models in order to match observations of our world. The local conservation of energy is always present in such models, as they are solutions of the Einstein field equation. [... sillier stuff omitted] Tom Roberts You should at least try to understand what Jim Jastrzebski wrote. Local conservation doesn't imply global conservation. You should think "globally", not "locally". Anyhow, you are outside the point, which is the fact that remote globular clusters are much older than the GR universe. Marcel Luttgens |
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#3
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Tom Roberts wrote in message ...
Jim Jastrzebski wrote: (Marcel Luttgens) [...] one should accept that the universe is static. The universe is obviously not "static" since e.g. the moon travels around the earth, not to mention other things that obviously _move_ wrt each other. Yes. It might be _stationary_ though, and most likely it is since nothing that we observe contradicts such a possibility, Not true. While I am not an expert on cosmological observations, there are several observations I know of that contradict any reasonable stationary model of the universe: 1. The redshift of distant galaxies is roughly proportional to their distance away from us. 2. The CMBR we observe has a temperature of 2.7 K; near distant objects it is observed to be much hotter. ... there may well be others AFAIK to explain these in a stationary model requires that one postulate processes that we don't observe to occur locally (e.g. "tired light"). and it may be shown that if principle of conservation of energy is valid then it is almost surely stationary Not true. GR and the FRW manifolds are a counterexample. Maybe editors scientific journals should allow printing papers that assume validity of principle of conservation of energy? Huh??? GR contains the local conservation of energy and papers about it are published quite regularly. Perhaps you don't understand what "conservation of energy" means in modern physics.... But in GR this is not an "assumption", it is a conclusion.... After all Einstein's Field Equations conserves energy automatically and so insisting that the universe is expanding just to prove that energy is not conserved doesn't seem to have much sense, Obviously you don't understand GR. One uses "expanding" models in order to match observations of our world. The local conservation of energy is always present in such models, as they are solutions of the Einstein field equation. [... sillier stuff omitted] Tom Roberts You should at least try to understand what Jim Jastrzebski wrote. Local conservation doesn't imply global conservation. You should think "globally", not "locally". Anyhow, you are outside the point, which is the fact that remote globular clusters are much older than the universe. Sorry for the multiple posting, I have a problem with Google or my provider! Marcel Luttgens |
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#4
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Tom Roberts wrote in message ...
Jim Jastrzebski wrote: (Marcel Luttgens) [...] one should accept that the universe is static. The universe is obviously not "static" since e.g. the moon travels around the earth, not to mention other things that obviously _move_ wrt each other. Yes. It might be _stationary_ though, and most likely it is since nothing that we observe contradicts such a possibility, Not true. While I am not an expert on cosmological observations, there are several observations I know of that contradict any reasonable stationary model of the universe: 1. The redshift of distant galaxies is roughly proportional to their distance away from us. 2. The CMBR we observe has a temperature of 2.7 K; near distant objects it is observed to be much hotter. ... there may well be others AFAIK to explain these in a stationary model requires that one postulate processes that we don't observe to occur locally (e.g. "tired light"). and it may be shown that if principle of conservation of energy is valid then it is almost surely stationary Not true. GR and the FRW manifolds are a counterexample. Maybe editors scientific journals should allow printing papers that assume validity of principle of conservation of energy? Huh??? GR contains the local conservation of energy and papers about it are published quite regularly. Perhaps you don't understand what "conservation of energy" means in modern physics.... But in GR this is not an "assumption", it is a conclusion.... After all Einstein's Field Equations conserves energy automatically and so insisting that the universe is expanding just to prove that energy is not conserved doesn't seem to have much sense, Obviously you don't understand GR. One uses "expanding" models in order to match observations of our world. The local conservation of energy is always present in such models, as they are solutions of the Einstein field equation. [... sillier stuff omitted] Tom Roberts You should at least try to understand what Jim Jastrzebski wrote. Local conservation doesn't imply global conservation. You should think "globally", not "locally". Anyhow, you are outside the point, which is the fact that remote globular clusters are much older than the GR universe. Marcel Luttgens |
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