Of what is the galactic halo composed? What will be an ideal ...

[mydiamond]

Of what is the galactic halo composed?
 
  What will be an ideal response?

Question 2

The density of interstellar dust is very low, yet it still blocks starlight because
 
  A) there is 100 times more opaque gas than dust present in the interstellar medium.
  B) it is so cold it absorbs higher energy photons.
  C) the dust particles are about the same size as the light waves they absorb.
  D) the dust particles are irregular in shape.
  E) ice particles reflect all light back toward their stars, not toward us.

[nital]

Answer to Question 1

The globular clusters are most obvious component, but the halo also has many loose stars of Population II, escaped from their clusters, and a great deal of dark matter, whose true nature is still uncertain.

Answer to Question 2

C

[mydiamond]

Excellent

[FergA]

Great answer, keep it coming