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Author Question: For finding the distance to M31, Hubble relied upon A) planetary nebulae near its core. B) ... (Read 200 times)

theo

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on: Jul 27, 2018
For finding the distance to M31, Hubble relied upon
 
  A) planetary nebulae near its core.
  B) Cepheid variables in its spiral arms.
  C) Type I supernova in its core.
  D) Type II supernova in its spiral arms.
  E) RR Lyrae stars in its globular clusters.

Question 2

The brightest stars in aging globular clusters will be
 
  A) blue supergiants like Rigel and Deneb.
  B) massive blue main-sequence stars like Spica.
  C) blue stragglers.
  D) red supergiants like Betelgeuse and Antares.
  E) core stars of planetary nebulae.


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ciecieme

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

B

Answer to Question 2

D


theo

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

deja

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

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