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Author Question: What distance method is used to determine the distance to the most distant galaxies when only a ... (Read 117 times)

c0205847

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on: Jul 27, 2018
What distance method is used to determine the distance to the most distant galaxies when only a redshift is measured?
 
  a. Hubble's law
  b. supernova observations
  c. period-luminosity relationship of variable stars
  d. parallax

Question 2

What is hydrostatic equilibrium and how is it used to explain the internal stability of a star?
 
  What will be an ideal response?


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Moriaki

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

a

Answer to Question 2

Hydrostatic equilibrium is the stable balance between weight and pressure. This shows that the inner layers of stars must be hotter because they must support more weight.


c0205847

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

ricroger

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Reply 3 on: Yesterday
Excellent

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