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Author Question: For measuring the distances to galaxies within 17 Mpc, we rely primarily on ________ variable stars. ... (Read 47 times)

lidoalex

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on: Jul 27, 2018
For measuring the distances to galaxies within 17 Mpc, we rely primarily on ________ variable stars.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following are signposts of the presence of high mass stars, and thus recent star formation?
 
  A) closely spaced low mass stars
  B) predominantly blue reflection nebulae
  C) predominantly red ionization nebulae
  D) A and C
  E) B and C


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trampas

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

Cepheid

Answer to Question 2

E


lidoalex

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Reply 2 on: Jul 27, 2018
Wow, this really help

amynguyen1221

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Reply 3 on: Yesterday
:D TYSM

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