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Author Question: The concept that the direction of observation does NOT matter overall is A) universality. B) ... (Read 78 times)

809779

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on: Jul 27, 2018
The concept that the direction of observation does NOT matter overall is
 
  A) universality.
  B) homogeneity.
  C) geometry.
  D) isotropy.
  E) relativity.

Question 2

What is the best way to determine a galaxy's redshift?
 
  A) Find the galaxy's apparent distance, and look up the redshift based on Hubble's Law.
  B) Find the color of the galaxy, and estimate its distance based on how red the galaxy is.
  C) Measure the magnitude of the galaxy, estimate its distance, and calculate its redshift using Hubble's Law.
  D) Take a spectrum of the galaxy, and measure the difference in wavelength of spectral lines from the wavelengths of those same lines as measured in the laboratory.


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josephsuarez

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

D

Answer to Question 2

D


809779

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Reply #2 on: Jul 27, 2018
TY


josephsuarez

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Reply #3 on: Jul 27, 2018
You're welcome


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