Questions tagged [intergalactic-space]
Questions regarding the space or objects outside of galaxies.
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Conventional matter to dark matter ratio, outside of galaxies
Consider say this outstanding diagram from another question,
To begin with galaxies have a typical density D. Intergalactic space has a much lower density d.
As we know: in galaxies (with density D) ...
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Where does the Milky Way end?
I was reading this article
and it says the following:
Researchers measured the mass of the Milky Way and found that our galaxy is approximately half the weight of a neighbouring galaxy known as ...
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Could stars form outside of galaxies?
Is it possible for there to be a dense enough nebula to form stars outside of any galaxy? Does a galaxy have a minimum size to produce stars? Or could you have a few dozen stars clustered together by ...
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What is there in the intergalactic space?
What bodies can be encountered way outside galaxies - far beyond the farthest edges of galaxies, in the deep space between them? Are there single, galaxy-less stars, giant clouds of gas more dense ...
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Dark Flow: statistical limits on existence
Dark Flow has been thrown around as a term a lot lately, especially with the latest Planck results.
New Scientist reported last year that it was now statistically improbable, but the paper by Atrio ...
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Have we observed any rogue/wandering stars?
Do we know (have we observed and cataloged) any rogue star, being not part of galaxy, but drifting somewhere in inter-galactic space?
I know that determining if a star is a part of galaxy or not is a ...
user42
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Why is the Warm-Hot Intergalactic Medium (WHIM) so hot, and what is "collisionless shock heating"?
The Phys.org article Researchers find last of universe's missing ordinary matter says:
Ordinary matter, or "baryons," make up all physical objects in existence, from stars to the cores of ...
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What is at the edge of the galaxy?
The solar system is thought to have a heliopause which can be considered its edge for many purposes:
The heliopause is the theoretical boundary where the Sun's solar wind is stopped by the ...
user14116
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Could dark energy be negative gravity?
Main question: Could dark energy (the mysterious accelerating expansion of the universe) be explained by "negative gravity"?
"Spin off" questions:
Does antimatter have negative gravity?
If ...
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When we say a galaxy is 200 million light years away, does this account for the expansion of space in the time it took it's light to reach us?
When we see a distant galaxy, the light we are watching started it's journey millions of years ago. In all that time, space has been expanding, so if the initial distance was A, right now the distance ...
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What would the night sky look like if Earth orbited an intergalactic star?
If the Earth and its host star were located exactly in-between the Milky Way and Andromeda would the night sky be completely void of light?
Would stars be visible to the unaided eye?
So there could ...
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How do we estimate the amount and distribution of Helium in interstellar and intergalactic space?
Quoting from wikipedia: Helium
... is the second lightest and second most abundant element in the observable universe (hydrogen is the lightest and most abundant). It is present at about 24% of the ...
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Do star systems stripped from galaxies have different expected behavior?
Another way of stating this question: Does the fact that a star system (or comparable concentrated mass) exists in a galaxy affect its long-term evolution, in terms of expansion, contraction, ...
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What fraction of matter is not bound to the galaxies, groups and clusters that we see?
We know that most of the matter in the universe has collapsed into galaxies and galaxies into groups and clusters and that a lot of matter is presently in clusters between the galaxies. But, what ...
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Would being ejected from the Milky Way Galaxy have any major impact on life on Earth? [duplicate]
I was reading about the impending collision of our galaxy with the Andromeda galaxy, and learned that there is a small possibility that our solar system could be ejected during the collision.
...
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