Questions tagged [intergalactic-space]
Questions regarding the space or objects outside of galaxies.
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dark matter in galaxy cluster in intergalactic space
On the rotation speed of galaxies in a galaxy cluster:
-> Is the dark matter associated with each galaxy in a cluster, sufficient to explain the rotation speed of galaxies in the cluster, or extra ...
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Is there likely any star systems in the very middle of the largest voids?
I imagine this question is as old Hubble's red shift measurements publication. Has there been enough time for any solar system to make it right to the middle of a void? Any Goldilocks scenarios there? ...
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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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What is the density of photon energy in intergalactic space? [duplicate]
What is the average density of photon energy (over all wavelengths) in intergalactic space? In other words, if you took a typical cubic meter of intergalactic space, how much electromagnetic radiation ...
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Intergalactic Lyman-alpha absorption for high redshift quasars (Gunn-Peterson effect)
This is a follow up to a recent question on SE asking about the apparent suppression of radiation shortward of the (red-shifted) Ly-$\alpha$ line of a quasar at redshift $z=6.53$.
The general ...
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Why does the first measurements of the thermal Sunyaev-Zel’dovich effect from ALMA show a temperature decrease and not an increase at the cluster?
Seeing the phrase a fully functional Stewart Platform I Wikipediad it and that article shows the AMiBA a CMB interferometer mounted on a hexapod (shown below).
Wikipedia's Sunyaev–Zeldovich effect; ...
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Is our Milky Way galaxy (and its neighbors?) moving through the universe at 370 km/s (~828,000 mph) or 370 miles/sec (~1,332,000 mph)? [duplicate]
I swear that exactly half of the many, many sites I found say that our Galaxy and its immediate neighbors are moving towards the Leo Constellation (I believe) and, ultimately, supposedly, the 'Great ...
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Can two neighboring galaxies move apart at steady speed?
While I was trying to understand the three models that obey Friedmann's two assumptions of a non-static universe, I came across a line that says and I quote "It (referring to Big Bang) starts at ...
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Do any particles in AGN jets escape the galaxy?
I have read, at http://www.thestargarden.co.uk/Black-holes.html for example, that whole stars can be ejected from certain galaxies. "These are thought to have been part of a binary star system ...
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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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What error bar / confidence level is generally reported in galaxy distances?
In reporting distances of galaxies, what are the typical error bars and associated confidence levels?
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How thick are the intergalactic filaments?
Recently, in October, news came out about the faint intergalactic filaments finally being 'found'.
Then, in June, astronomers announced that these things had enough normal matter in them to solve the '...
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What exactly is a "conclusive association" in Astronomy?
Phys.org's Astronomers use slime mold model to reveal dark threads of the cosmic web says
A computational approach inspired by the growth patterns of a bright yellow slime mold has enabled a team of ...
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Local Bubble in space
Is the Local Bubble alone in space or is there another bubble similar to the Local Bubble in space, i.e., do we live in a special place or is this a more general phenomenon?
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What would you find within a void?
I'm aware that voids are relatively empty regions of the universe, but just how empty can they be? Wikipedia states that voids have 'few or no' galaxies, but I can't find much else.
To make my ...
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