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Author Question: A ten billion year old globular cluster has every star evolved into a giant, with no main sequence ... (Read 74 times)

Kthamas

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on: Jul 27, 2018
A ten billion year old globular cluster has every star evolved into a giant, with no main sequence stars left.
 
  Indicate whether the statement is true or false

Question 2

Assuming the conditions ripe for life and intelligence abound in the Galaxy, what factor limits the number of galactic civilizations?
 
  A) the lack of metals for technology
  B) the number of supernova explosions
  C) the expansion of the Universe
  D) the average survival time of the civilizations
  E) the speed of technological development


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stallen

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

FALSE

Answer to Question 2

D


Kthamas

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

duy1981999

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

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