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Author Question: Of what is the galactic halo composed? What will be an ideal ... (Read 56 times)

mydiamond

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on: Jul 27, 2018
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.


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nital

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Reply #1 on: Jul 27, 2018
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

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Reply 2 on: Jul 27, 2018
:D TYSM

blakcmamba

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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