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Author Question: What is the primary factor in determining the classification for an elliptical galaxy? a. size ... (Read 125 times)

theo

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on: Jul 27, 2018
What is the primary factor in determining the classification for an elliptical galaxy?
 
  a. size
  b. shape
  c. mass
  d. color

Question 2

Why are distant stars redder than nearby stars of the same spectral type?
 
  What will be an ideal response?


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todom5090

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

b

Answer to Question 2

Interstellar reddening makes stars seen through a cloud of gas and dust look redder than they should because shorter wavelength light is more easily scattered.


theo

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Reply #2 on: Jul 27, 2018
Thanks


todom5090

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Reply #3 on: Jul 27, 2018
Welcome :)


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