All Questions
6
questions
1
vote
2
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134
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Why can't Dark Matter be curvature without a proximal mass source? [closed]
I don't understand why Dark Matter or MOND/"gravity works different on bigger scales" are the only options to explain the observational data.
Why can't it just be curvature without a "...
0
votes
1
answer
51
views
How are neutrinos massless? Could they or at least some of their forms be a potential candidate for Dark matter? [duplicate]
I am particularly new to this subject. Can neutrino physics be understood by a 10th grade?
- 1
1
vote
3
answers
389
views
Farnes, cosmology involving negative mass
I came across a paper recently which seems to be getting a lot of popular press, and a student also emailed me to ask about it: --
Farnes, "A Unifying Theory of Dark Energy and Dark Matter: Negative ...
user4552
1
vote
1
answer
78
views
Can Dark Matter be light and cold at the same time?
In most of the papers that I encounter, the mass range for Dark matter is generally taken to be 1-1000 GeV. Is it possible that dark matter is of the order of few MeV? What observation is violated in ...
6
votes
2
answers
3k
views
Is most of the matter in the observable universe within galaxies?
Do we know, either through observations or through theory driven computer simulations, the location of the majority of the visible matter in the observable universe?
That is, is it located within ...
user81619
9
votes
6
answers
5k
views
Why can't "missing mass" (=dark matter) be photons?
After a star lives and dies, I assume virtually all of its mass would be photons. If enough stars have already lived and died, couldn’t there be enough photon energy out there to account for all ...
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