If the universe is made up of up to 90% dark matter, where is most of this dark matter situated?

EVERYWHERE. The problem is, we can't detect it.

mmalky

Dark matter is not 90%.Its around 27%.The rest 73% is dark Energy.

When we compare dark matter to dark energy, we aren't really comparing the matter and energy directly; what we're really comparing is the strength of the dark matter's gravitational attraction with the strength of the dark energy's repulsion. So when you hear about the universe being 73 percent dark energy and 27 percent matter (most of the matter is dark matter, but not all of it), then roughly speaking, you can think of these numbers as the relative effect of each component (the matter pulling in, and the dark energy pushing out) on the universe's expansion.

Dark matter is the term astronomers use for the matter that they detect in the universe which cannot be seen. What I mean by this is that although when you look through a telescope nothing appears to be there, the way that the visible matter moves indicates that there must be more mass present.

Uniontera number 11-1, hope it helps. This is your so-called dark matter and dark energy.

This is my uniontera.

Existence is the time expressed by light itself. http://www.youtube.com/watch?v=AN1jTwHUC7E

- Key Point -

1. When same times met ... Arrow A (Cause of Laser / Origin of Death / Reason of Chemical reaction)

2. When different times met ... Arrow B (This is your so-called "Gravity" / Cause of Higgs boson / Origin of Life / Reason of Biological reaction)

3. The rose line is the beginning light. (result from Genesis 1:3)

4. The existence of different time. (result from relativity of light)

5. 2 dimension is not a space. (result from 2-axis, math)

6. Universe came from nothing. (result from No.5 / cf. Playing with bubbles)

6-1. A barrier[posititon] exist between the inner and outer bubbles. But universe do not have that barrier. (Cause of Inertia / Reason of Sun / Position of Antimatter / Origin of Fire / cf. Expansion, Conservation of parity, Time-reversal invariance)

6-2. Nothing is not a no existence. No existence is a zero dimension. There is two zero dimension. One has a position. The other doesn't have a position. These different positions were connected by something. That "something" is not a what but a way. (Cause of Light / cf. Ether)

7. Progress / Event / Probability is a time. (This is my trinity.)

8. Wave-particle duality of light, creation & evolution, uncertainty principle, etc. (result from No.7)

9. Coalescing of different times. (Cause of Rotation & Spin / Equator has plenty of time. / Origin of Colour / Reason of Reflection / cf. Strong interaction)

10. Your so-called "Black hole" is a wholly condensed time. (cf. Kerr spacetime)

11. The reason of your so-called "Magnetic field". (result from step3 and 4)

11-1. The reason of your so-called "Dark matter". (result from step3 to 4 / Energy-Mass duality / cf. Dark energy "step4 to 3")

12. The reason of your so-called "Electric field". (result from the crack of time / Same time's crack is a different time's connection. / Cause of Static electricity)

13. Your so-called "Space" is a crack of time. (result from No.12 / Cause of Lightning / Reason of Refraction / cf. Weak interaction)

13-1. The reason of your so-called "Capture & Decay". (result from No.13's crack of time / cf. Violation of time-reversal invariance)

13-2. The reason of No.6-2's "position & none position". (result from No13-1's "capture & decay")

13-3. The reason of No.13's space. (result from No.13-2's "position & none position" / cf. Noneconservation of parity)

14. Boundary is a crack of space. (result from No.13 / Same space's crack is a different time's contact. / Cause of Superfluid / cf. Fractal)

15. Boundary is nothing. Your so-called "Hole" is a boundary itself. Also, nothing is K=0 temperature. (result from No.14 / cf. Calabi-Yau, Hilbert space)

16. This is a wall of your so-called "Fire". (result from No.15) - copyright ⓒ uniontera

Our nonsense has come from one time. Uniontera is a key.

English is not my first language, sorry!

If it is difficult to understand, just remember & enjoy "Hand touching everything is a time". This is the only one result of uniontera.

behind the silver lining.