| Topic: |
Science > Physics |
| User: |
"David Wimp" |
| Date: |
05 Nov 2005 09:15:23 AM |
| Object: |
Does space flow out of galactic clusters? |
If space is expanding everywhere and galactic clusters (and super
clusters?) are gravitationally tethered, that would seem to imply that
space would be flowing out of the clusters and thus through the galaxies
in the clusters unless the mass in the clusters somehow prevents this
from happening. If there is some sort of space flux going on there? If
so, would it have the same effect on mass as matter moving through
space, i.e. the its mass increases. If space is flowing through
galaxies, would a large black hole at the center affect the flow? I am
not a physicist or a cosmologist, so if these questions are off the
wall, I would not be offended by a dope slap.
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| User: "Sam Wormley" |
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| Title: Re: Does space flow out of galactic clusters? |
05 Nov 2005 09:30:46 AM |
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David Wimp wrote:
If space is expanding everywhere and galactic clusters (and super
clusters?) are gravitationally tethered, that would seem to imply that
space would be flowing out of the clusters and thus through the galaxies
in the clusters unless the mass in the clusters somehow prevents this
from happening.
Space is expanding with a current expansion rate of 71 km/s/Mpc, but
at the local and even super galactic cluster levels, gravity dominates.
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| User: "David Wimp" |
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| Title: Re: Does space flow out of galactic clusters? |
05 Nov 2005 11:20:27 AM |
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Sam Wormley wrote:
David Wimp wrote:
If space is expanding everywhere and galactic clusters (and super
clusters?) are gravitationally tethered, that would seem to imply that
space would be flowing out of the clusters and thus through the
galaxies in the clusters unless the mass in the clusters somehow
prevents this from happening.
Space is expanding with a current expansion rate of 71 km/s/Mpc, but
at the local and even super galactic cluster levels, gravity dominates.
But how does gravity dominate? Does it hold the objects together even
though the space within the cluster is exanding or does it just keep the
space from expaning locally?
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| User: "Old Man" |
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| Title: Re: Does space flow out of galactic clusters? |
05 Nov 2005 07:21:09 PM |
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"David Wimp" <NoJoliRajaSpam@joliraja.com> wrote in message
news:11mpqb2m8bkk69b@news.supernews.com...
Sam Wormley wrote:
David Wimp wrote:
If space is expanding everywhere and galactic clusters (and super
clusters?) are gravitationally tethered, that would seem to imply that
space would be flowing out of the clusters and thus through the galaxies
in the clusters unless the mass in the clusters somehow prevents this
from happening.
Space is expanding with a current expansion rate of 71 km/s/Mpc, but
at the local and even super galactic cluster levels, gravity dominates.
But how does gravity dominate? Does it hold the objects together even
though the space within the cluster is exanding or does it just keep the
space from expaning locally?
Gravity (space curvature) opposes the expansion of space.
On a large scale, energy is uniformly distributed; gravity
cancels out; space curvature is nil. Assuming that the
cosmological constant is zero, the rate of space expansion
(Hubble's constant) is proportional to the square root of
the energy density.
On a small scale; In a galaxy or galactic cluster, the energy
density is large. Space would expand rapidly but is
overwhelmed by the opposing local curvature of space
(gravity).
See the Friedman Equation:
"Introduction to Cosmology" B Rydan ISBN 0-8053-8912-1
[Old Man]
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| User: "Orion" |
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| Title: Re: Does space flow out of galactic clusters? |
05 Nov 2005 08:36:37 PM |
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Gravity is not space curvature, can't be. It's space-time curvature and
it's mostly time which is curved.
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| User: "Old Man" |
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| Title: Re: Does space flow out of galactic clusters? |
06 Nov 2005 01:59:15 PM |
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"Orion" <danny99@bezeqint.net> wrote in message
news:1131244597.083151.26470@g49g2000cwa.googlegroups.com...
Gravity is not space curvature, can't be. It's space-time
curvature and it's mostly time which is curved.
The expansion of space is inertial. Free-fall is inertial.
Cosmological red-shift isn't Doppler shift. Tidal force
(pure space curvature) has naught to do with time.
[Old Man]
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| User: "Y.Porat" |
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| Title: Re: Does space flow out of galactic clusters? |
06 Nov 2005 03:21:06 AM |
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Time does not curve
space does not curve
there is something physically much simpler and tangible.
ATB
Y.Porat
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| User: "Y.Porat" |
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| Title: Re: Does space flow out of galactic clusters? |
06 Nov 2005 03:24:26 AM |
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can you do something better than parroting???
(and mumbling??)
Y.Porat
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| User: "" |
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| Title: Re: Does space flow out of galactic clusters? |
06 Nov 2005 02:22:15 PM |
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can you do something better than parroting???
(and mumbling??)
Y.Porat
**************
Since your "you" is an indefinite reference, I shall take up your
challenge. Better than parroting? Remember the Meow Mix
commercial?????
Meow, meow, meow, meow,
Meow, meow, meow, meow,
Meow, meow, meow, meow,
Meow, meow, meow, meow,
Meow, meow, meow, meow,
Meow, moew, meow, meow,
Meow, meow, meow, meow,
Meow, meow, meow, meow.
- Mr. Pussycat
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| User: "Y.Porat" |
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| Title: Re: Does space flow out of galactic clusters? |
05 Nov 2005 09:57:38 AM |
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Sam Wormley wrote:
David Wimp wrote:
If space is expanding everywhere and galactic clusters (and super
clusters?) are gravitationally tethered, that would seem to imply that
space would be flowing out of the clusters and thus through the galaxies
in the clusters unless the mass in the clusters somehow prevents this
from happening.
Space is expanding with a current expansion rate of 71 km/s/Mpc, but
at the local and even super galactic cluster levels, gravity dominates.
---------------------
space is nothing
it does not expand and it does not not expand
just forget about space mumbling
the only property it has is hosting particles
so we have to deal with particle properties
the only space property is to host particles
so wherever there are particles there is space
thats all
why wast so much human efforts on nothing
iow griding water.
ATB
Y.Porat
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