All Questions
Tagged with cosmology dark-matter
265
questions
8
votes
1
answer
187
views
Temperature of WIMPs
As a dark matter candidate, what should be the temperature and kinetic energy (or also the speed) of the WIMPs (weakly interacting massive particles) to agree with the observed distribution of dark ...
- 427
8
votes
1
answer
359
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Why do astronomers say that there is not enough matter in Universe?
I was reading today about the birth of the Universe and the conjectures about the matter that was supposed to exist at the moment of the Big Bang and what can be measured now.
There seems to be some ...
- 233
9
votes
3
answers
317
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What's dark matter and who discovered it?
I have heard about dark matter that's called the Master Of The Universe. What's this and is the dark matter the reason galaxies exist?
Azzurrio
3
votes
2
answers
372
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If dark matter is a new type of particle, what does that imply?
My understanding is that dark matter cannot be (or is at least highly unlikely to be) an exotic form of any known particle. On the other hand, articles about particle accelerators seem to say that the ...
- 1,640
17
votes
3
answers
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Is dark matter repulsive to dark matter? Why?
I think I saw in a video that if dark matter wasn't repulsive to dark matter, it would have formed dense massive objects or even black holes which we should have detected.
So, could dark matter be ...
- 1,077
56
votes
4
answers
4k
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Are modified theories of gravity credible?
I'm a statistician with a little training in physics and would just like to know the general consensus on a few things.
I'm reading a book by John Moffat which basically tries to state how GR makes ...
- 673
19
votes
5
answers
5k
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Dark matter and dark energy references
I've been looking for questions about dark matter, and I've read some very interesting answers. However, I desire too look into it deeply.
This is not actually a question. I'm asking the community ...
4
votes
0
answers
243
views
Why is “dark matter” a more parsimonious explanation than “more normal matter than we thought”? [duplicate]
Possible Duplicate:
Why isn't dark matter just matter ?
The evidence usually presented in support of dark matter is larger-than-expected masses in galaxy clusters: the mass required for the ...
- 155
50
votes
8
answers
7k
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Why isn't dark matter just ordinary matter?
There's more gravitational force in our galaxy (and others) than can be explained by counting stars made of ordinary matter. So why not lots of dark planetary systems (i.e., without stars) made of ...
- 603
10
votes
4
answers
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What current alternatives are there to the standard concordance model of cosmology?
The current "standard model" or concordance model of cosmology is Lambda CDM which includes late time acceleration due to a cosmological constant, cold dark matter as the missing matter component and ...
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