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Author Question: The traditional top-down hypothesis of the formation of our galaxy cannot explain a. why not all ... (Read 62 times)

jrubin

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on: Jul 27, 2018
The traditional top-down hypothesis of the formation of our galaxy cannot explain
 
  a. why not all globular clusters are the same age.
  b. why the youngest globular clusters are in the outer halo.
  c. why the oldest stars are metal poor but not completely metal free.
  d. streams and rings of scattered stars in the halo.
  e. All of the other choices are correct.

Question 2

Emission nebulae are also called ________ because they are composed of ionized hydrogen.
 
  a. HI regions
  b. HII regions
  c. Bok globules
  d. HeI regions
  e. reflection nebulae


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iman

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Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

b


jrubin

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Reply 2 on: Jul 27, 2018
:D TYSM

nguyenhoanhat

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Reply 3 on: Yesterday
Excellent

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