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Author Question: Contrast open clusters and associations. What will be an ideal ... (Read 13 times)

MGLQZ

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on: Jul 27, 2018
Contrast open clusters and associations.
 
  What will be an ideal response?

Question 2

According to our definition, we have been a technological civilization for about
 
  A) 500 years. B) 100 years. C) 10 years. D) 1000 years. E) 10,000 years.


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rnehls

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

Open clusters contain more stars, are better bound gravitationally, and will last much longer-hundreds of millions or billions of years. Associations are less massive clusters spanning a larger region of space, they are less bound, and will break up in tens of millions of years as the Galaxy spins.

Answer to Question 2

B


MGLQZ

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Reply 2 on: Jul 27, 2018
Gracias!

ASDFGJLO

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Reply 3 on: Yesterday
:D TYSM

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