Method

Quick question here that I've thought about in the past and always
assumed what the answer was but would like to hear some thoughts:

Do we know of any stars that exist outside of the influence of a galaxy?
If so, which direction are they moving? Are they stars that once
existed within the influence of a galaxy or are there nebula/gas clouds
that are stellar nursury?

Are they stars that once
existed within the influence of a galaxy or are there nebula/gas clouds
that are stellar nursury?


What's a stellar nursury?

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Southern Hospitality wrote:

Quick question here that I've thought about in the past and always
assumed what the answer was but would like to hear some thoughts:

Do we know of any stars that exist outside of the influence of a galaxy?
No. As far as I know, no intergalactic stars have been observed.
If so, which direction are they moving? Are they stars that once
existed within the influence of a galaxy or are there nebula/gas clouds
that are stellar nursury?
Star formation occurs in relatively dense clouds. The density of
intergalacric matter is far too low to allow star formation

All the best Jurgen

J.Barsuhn wrote:


Southern Hospitality wrote:

Quick question here that I've thought about in the past and always
assumed what the answer was but would like to hear some thoughts:

Do we know of any stars that exist outside of the influence of a galaxy?

No. As far as I know, no intergalactic stars have been observed.

If so, which direction are they moving? Are they stars that once
existed within the influence of a galaxy or are there nebula/gas
clouds that are stellar nursury?

Star formation occurs in relatively dense clouds. The density of
intergalacric matter is far too low to allow star formation

All the best Jurgen

In principle, I think a star could be ejected from a galaxy after
being formed. A low mass star could (theoretically at least) go
in crazy trajectory after a close encounter with a much heavier
star. I don't know if this could happen in practice, though...

- Alex

Alexander Avtanski wrote:
J.Barsuhn wrote:



Southern Hospitality wrote:

Quick question here that I've thought about in the past and always
assumed what the answer was but would like to hear some thoughts:

Do we know of any stars that exist outside of the influence of a galaxy?


No. As far as I know, no intergalactic stars have been observed.

If so, which direction are they moving? Are they stars that once
existed within the influence of a galaxy or are there nebula/gas
clouds that are stellar nursury?


Star formation occurs in relatively dense clouds. The density of
intergalacric matter is far too low to allow star formation

All the best Jurgen


In principle, I think a star could be ejected from a galaxy after
being formed. A low mass star could (theoretically at least) go
in crazy trajectory after a close encounter with a much heavier
star. I don't know if this could happen in practice, though...

- Alex

Great! My assumption was that all stars are formed within galaxies. I
had also thought that any star that was spotted in intergalactic space
would likely have been the result of some past event that flung it
outside of it's original home.

In message , Alexander Avtanski
writes
J.Barsuhn wrote:
Southern Hospitality wrote:

Quick question here that I've thought about in the past and always
assumed what the answer was but would like to hear some thoughts:

Do we know of any stars that exist outside of the influence of a
galaxy?
No. As far as I know, no intergalactic stars have been observed.

If so, which direction are they moving? Are they stars that once
existed within the influence of a galaxy or are there nebula/gas
clouds that are stellar nursury?
Star formation occurs in relatively dense clouds. The density of
intergalacric matter is far too low to allow star formation
All the best Jurgen

In principle, I think a star could be ejected from a galaxy after
being formed. A low mass star could (theoretically at least) go
in crazy trajectory after a close encounter with a much heavier
star. I don't know if this could happen in practice, though...

The other way that intergalactic stars could appear is if their galaxy
was torn apart, as is happening to the Magellanic Clouds near the Milky
Way, and such stars have actually been observed. Look at
http://hubblesite.org/newscenter/newsdesk/archive/releases/1997/02/,
for instance. Intergalactic stars have also been seen in the Fornax
cluster.
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S.H There is no star,no particles,or energy,and no light ray that is
not under the influence of gravity. Gravities force goes to infinity.
Gravity is the intrinsic force of the universe. All things have
inertia,and inertia and gravity are the same thing.. Going with GR all
space is curved. You can't get out of space. Bert

G=EMC^2 Glazier wrote:

S.H There is no star, no particles, or energy, and no light ray that
is not under the influence of gravity. Gravity's force goes to
infinity.


But at great distances is it negative or positive? Is positive gravity
the dark energy that is driving the universal expansion?


Gravity is the intrinsic force of the universe. All things have
inertia, and inertia and gravity are the same thing.. Going with GR
all space is curved.


But how is it curved? That is the question. Is it curved only on
small scales, like a rubber sheet with many depressions? Or does it
have large scale curviture? Is it a sphere-like curve, closed on
itself? Or a saddle like curve, open and boundless? Or is it in fact
flat on large scales? The longest range observations have indicated
that it is at least very close to being flat.


You can't get out of space. Bert
But Bert, isn't Treb outside of space?

Double-A

Hi Double-A Tomorrow I'll answer your complete post(to many buds at this
spacetime) I will say "Treb" who is not part of our dimensions is not
removed from a space that I'm sure we share. Treb's space is just a
"folding" in space fabric. He is closer to me than you are Double-A What
is close? Instantaneous takes away distance. The speed of light takes
away a time lapse. Gravity takes away time,or controls its flow. the
speed of a photon,and gravity in its strongest form(black hole) are
equivalent to bringing time to zero. If time is zero,than space is zero
Bert

G=EMC^2 Glazier wrote:
S.H There is no star,no particles,or energy,and no light ray that is
not under the influence of gravity. Gravities force goes to infinity.
Gravity is the intrinsic force of the universe. All things have
inertia,and inertia and gravity are the same thing.. Going with GR all
space is curved. You can't get out of space. Bert


My apologies for being too general. I understand that gravity does have
a long reach but my question was more geared towards identifying whether
or not a star could form outside of a galaxy. I had always assumed they
would not and that the only reason why a star would be found outside of
a galaxy would be due to the rending that occurs during the merger of
two or more galaxies.