Dark matter

  • Thread starter aniket
  • Start date
  • #1
aniket
6
0
Hey guys,
what is dark matter?what is it made up of and where is it?can any theory explain this?
can string theory explain this? so please frendz help me out of this.
 

Answers and Replies

  • #2
mathman
Science Advisor
8,086
550
The evidence for the existence of dark matter lies in various graviational effects on a large scale (galaxies and clusters of galaxies). What it is made of is still unknown. All that can be said is that most of it is NOT baryonic (ordinary) matter. There are several theories, but no evidence yet for any of them.
 
  • #3
BioBen
29
0
What it is made of is still unknown.
I agree of course (your answer is the good one).
However, what i would just like to add is that i think that quite a lot of scientisit think that neutralinos (http://en.wikipedia.org/wiki/Neutralino) may be the mayor constituent of cold dark matter.

All that can be said is that most of it is NOT baryonic (ordinary) matter.
Baryonic dark matter is object like dwarf stars and other tiny "dark"(=shineless -but i don't know if that word exist) objects.
http://map.gsfc.nasa.gov/m_uni/uni_101matter.html
http://www.universetoday.com/am/publish/dark_matter_galaxy.html?2322005

Just to add : dark matter seems to make up around 23% of our universe mass-energy

can string theory explain this?
No idea ! Sorry :(

Benjamin
 
  • #4
Chronos
Science Advisor
Gold Member
11,435
748
Axions are still popular.
 
  • #5
EL
Science Advisor
552
0
Kaluza-Klein matter is also a suggestion.
 

Suggested for: Dark matter

  • Last Post
Replies
1
Views
140
Replies
23
Views
1K
  • Last Post
Replies
4
Views
945
  • Last Post
Replies
32
Views
2K
  • Last Post
Replies
2
Views
632
Replies
4
Views
463
Replies
1
Views
668
  • Last Post
Replies
12
Views
645
  • Last Post
Replies
1
Views
500
  • Last Post
Replies
16
Views
971
Top