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Author Question: A cluster containing a thousand or more galaxies, usually mostly ellipticals, scattered over a ... (Read 72 times)

madam-professor

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on: Jul 27, 2018
A cluster containing a thousand or more galaxies, usually mostly ellipticals, scattered over a volume only a few Mpc in diameter is referred to as a(n) _____.
 
  A) elliptical galaxy cluster
  B) irregular galaxy cluster
  C) poor galaxy cluster
  D) rich galaxy cluster

Question 2

The Andromeda Galaxy has a look-back time of:
 
  A) 4 years.
  B) 2000 years.
  C) 2 million years.
  D) 2 billion years.


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vish98

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

D

Answer to Question 2

C


madam-professor

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

isabelt_18

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Reply 3 on: Yesterday
Wow, this really help

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