Are Stars Limited to Galaxies or Can They Exist in Intergalactic Space?

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Discussion Overview

The discussion revolves around the existence of stars in intergalactic space versus their presence within galaxies. Participants explore the conditions under which stars might exist outside of galaxies, including the mechanisms that could lead to such occurrences.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • Some participants assert that stars can exist outside of galaxies, although most are found within them.
  • One participant suggests that stars outside of galaxies were likely born within a galaxy and ejected due to events like galactic collisions.
  • Another participant proposes that solar systems could also exist outside of galaxies, contingent on similar ejection processes.
  • There is a mention of hypervelocity stars as a specific example of stars that may exist outside of galaxies.
  • One participant notes that planets can exist outside of galaxies, not bound to any stars.
  • Another participant discusses the role of two- or three-body interactions in the ejection of stars, indicating that such events can occur even in stable galaxies.

Areas of Agreement / Disagreement

Participants generally agree that stars can exist outside of galaxies, but there is no consensus on the mechanisms or frequency of such occurrences. Multiple competing views regarding the processes leading to stars being found in intergalactic space remain present.

Contextual Notes

Some assumptions about the conditions necessary for stars to exist outside of galaxies are not fully explored, and the discussion includes varying perspectives on the frequency and mechanisms of star ejection.

trentt
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Do all stars have to be present inside of a galaxy? Or are there some stars that can be out side in intergalactic space?

I was just curious.

Thanks
 
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Stars are everywhere. They aren't just inside galaxies, although most are.
 
trentt said:
Do all stars have to be present inside of a galaxy? Or are there some stars that can be out side in intergalactic space?

I was just curious.

Thanks

Most likely any stars which exist outside of a galaxy were born within a galaxy but flung out of it for one reason or another. Probably the most likely possibility is a collision between galaxies, as these often fling constituent stars out into space.
 
Could a solar system exist outside of a galaxy?
 
Nicholas2001 said:
Could a solar system exist outside of a galaxy?

Sure, why not. Like I said though, was most likely ejected through some galactic collision.
 
I think most are no flinged out in a merger, although it happens in mergers, but all you need is a two-, or preferably three-body interaction, these also just happen in a galaxy that is just quietly sitting there. In a merger more stars will be launched per unit time, but the amount of time galaxies spend in a merger is limited. I'm not sure how that equilibrium will work out...
 
Stars definitely exist outside of galaxies. I've even read about planets that aren't gravitationally bound to any stars/exist outside of galaxies.
 
google "Hypervelocity stars"

http://www.cfa.harvard.edu/oir/sp/hypervel.html
 
Sir James Jeans in his book "The Dying Sun" has told all about universe and it's existence. if you are curious about the universe take and study.

Thanks
JhonMoney
 

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