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From: krw on 3 Jan 2010 20:38 On Mon, 04 Jan 2010 10:38:27 +1100, Sylvia Else <sylvia(a)not.at.this.address> wrote: >Capt. Cave Man wrote: >> On Mon, 04 Jan 2010 09:57:01 +1100, Sylvia Else >> <sylvia(a)not.at.this.address> wrote: >> >>> Capt. Cave Man wrote: >>>> On Sun, 03 Jan 2010 22:10:45 +1100, Sylvia Else >>>> <sylvia(a)not.at.this.address> wrote: >>>> >>>>> But the proper conclusion is that it's not sensible to talk about things >>>>> moving through space other than in the most informal terms. >>>> The velocity graph on the site differs with your claim. >>>> >>>> So does every mass in existence since they came into existence >>>> after the big bang initiated. It is ALL moving. >>>> >>>> Alas, even your frozen crude oil flow rate velocity neurons are. >>> Are you saying that the local space is that space that moves with the >>> common velocity relative to the Hubble flow? >>> >>> Sylvia >> >> >> Sorry, ditz, but you will no longer troll me. > >You mean you've looked back at your postings, and realised that you're >in a hole whether you say "yes" or "no". That's no change for AlwaysWrong. He's *always* wrong.
From: John Fields on 4 Jan 2010 14:22 On Sun, 3 Jan 2010 07:31:18 -0800 (PST), MooseFET <kensmith(a)rahul.net> wrote: .. .. .. >You are correct that the motions are relative to other bodies and not >relative to some >mythical fixed frame of reference in space. We are part of a group at >appears to be >gathering together amidst the greater collection that is flying apart. --- Which leads to my favorite hypothesis; that there was no big bang, but rather a big bubble which came about much like a bubble appears in a cavitating medium. If that were the case, then the medium surrounding our bubble would be the Universe, while what was bounded by the walls of our bubble would be our universe. Looking at it from the point of view that matter is accelerating away from us as its distance from us increases makes no sense in a big bang universe since, after the initial acceleration, nothing would be driving the mass and one would expect that matter would either recede at a constant velocity if the universe was open, stop if the universe was static, or accrete if the universe was closed. Such is not the case however, and for matter to accelerate as it gets farther way from us requires that some force be attracting it. If that force is gravitational and our universe is bubble-like, then the tug must be exerted by something external to our universe: the mass peculiar to that part of the Universe which is attracting it, causing matter on this side of the wall to hurtle toward it. As you say, there are, interestingly, blue shifts in our local group which indicate that some of our members are being attracted to each other. Even as that happens, though, we're _all_ accelerating toward the wall, sort of like people walking toward each other on a train accelerating toward a mountain. JF
From: John Fields on 4 Jan 2010 14:40 On Fri, 01 Jan 2010 21:36:18 +1100, Sylvia Else <sylvia(a)not.at.this.address> wrote: >Objects at different distances from the centre of the galaxy will have >different orbital periods. The time the Earth takes to go around the >galaxy will be different the time other objects take. There is no reason >to deem that the Earth's orbital period is the period of rotation of the >galaxy, and since different objects have different periods, the galaxy >does not have a rotational speed. --- Surprise!!! :-) http://en.wikipedia.org/wiki/Galaxy_rotation_curve JF
From: GregS on 4 Jan 2010 14:59 In article <lvf4k59qsoekgfdaeb8045f9phai5pbb84(a)4ax.com>, John Fields <jfields(a)austininstruments.com> wrote: >On Sun, 3 Jan 2010 07:31:18 -0800 (PST), MooseFET <kensmith(a)rahul.net> >wrote: > >.. >.. >.. > >>You are correct that the motions are relative to other bodies and not >>relative to some >>mythical fixed frame of reference in space. We are part of a group at >>appears to be >>gathering together amidst the greater collection that is flying apart. > >--- >Which leads to my favorite hypothesis; that there was no big bang, but >rather a big bubble which came about much like a bubble appears in a >cavitating medium. > >If that were the case, then the medium surrounding our bubble would be >the Universe, while what was bounded by the walls of our bubble would be >our universe. > >Looking at it from the point of view that matter is accelerating away >from us as its distance from us increases makes no sense in a big bang >universe since, after the initial acceleration, nothing would be driving >the mass and one would expect that matter would either recede at a >constant velocity if the universe was open, stop if the universe was >static, or accrete if the universe was closed. > >Such is not the case however, and for matter to accelerate as it gets >farther way from us requires that some force be attracting it. > >If that force is gravitational and our universe is bubble-like, then the >tug must be exerted by something external to our universe: the mass >peculiar to that part of the Universe which is attracting it, causing >matter on this side of the wall to hurtle toward it. > >As you say, there are, interestingly, blue shifts in our local group >which indicate that some of our members are being attracted to each >other. > >Even as that happens, though, we're _all_ accelerating toward the wall, >sort of like people walking toward each other on a train accelerating >toward a mountain. I listen to the expanding Universe people but can't figure out how we are going to bang into Andromeda. I have a theory of gravity. Its not being pulled but being pushed by black energy . greg
From: John Fields on 4 Jan 2010 15:22
On Mon, 04 Jan 2010 19:59:48 GMT, zekfrivo(a)zekfrivolous.com (GregS) wrote: >In article <lvf4k59qsoekgfdaeb8045f9phai5pbb84(a)4ax.com>, John Fields <jfields(a)austininstruments.com> wrote: >>On Sun, 3 Jan 2010 07:31:18 -0800 (PST), MooseFET <kensmith(a)rahul.net> >>wrote: >> >>.. >>.. >>.. >> >>>You are correct that the motions are relative to other bodies and not >>>relative to some >>>mythical fixed frame of reference in space. We are part of a group at >>>appears to be >>>gathering together amidst the greater collection that is flying apart. >> >>--- >>Which leads to my favorite hypothesis; that there was no big bang, but >>rather a big bubble which came about much like a bubble appears in a >>cavitating medium. >> >>If that were the case, then the medium surrounding our bubble would be >>the Universe, while what was bounded by the walls of our bubble would be >>our universe. >> >>Looking at it from the point of view that matter is accelerating away >>from us as its distance from us increases makes no sense in a big bang >>universe since, after the initial acceleration, nothing would be driving >>the mass and one would expect that matter would either recede at a >>constant velocity if the universe was open, stop if the universe was >>static, or accrete if the universe was closed. >> >>Such is not the case however, and for matter to accelerate as it gets >>farther way from us requires that some force be attracting it. >> >>If that force is gravitational and our universe is bubble-like, then the >>tug must be exerted by something external to our universe: the mass >>peculiar to that part of the Universe which is attracting it, causing >>matter on this side of the wall to hurtle toward it. >> >>As you say, there are, interestingly, blue shifts in our local group >>which indicate that some of our members are being attracted to each >>other. >> >>Even as that happens, though, we're _all_ accelerating toward the wall, >>sort of like people walking toward each other on a train accelerating >>toward a mountain. > > >I listen to the expanding Universe people but can't figure out how we are going >to bang into Andromeda. --- Andromeda is being pulled toward the wall by the mutual gravitation between the wall and Andromeda, and we're being pulled toward Andromeda and the wall by our mutual gravitation. Then, since we're being affected by Andromeda's field as well as the wall's, our speed toward the wall will be greater than Andromeda's and we'll eventually run into Andromeda on our way to the wall. --- >I have a theory of gravity. Its not being pulled but being pushed by >black energy . --- That's just repulsive! JF |