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Author Question: Some galaxy clusters are still growing today. Indicate whether the statement is true or ... (Read 21 times)

cagreen833

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on: Jul 27, 2018
Some galaxy clusters are still growing today.
 
  Indicate whether the statement is true or false

Question 2

Nebulae that scatter light are bluer than the stars that illuminate them. Earth's sky is bluer than the Sun. Is this a coincidence? Explain why or why not.
 
  What will be an ideal response?


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ErinKing

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

TRUE

Answer to Question 2

Nebulae that scatter light are bluer than the stars that illuminate them, and, similarly, Earth's atmosphere is bluer than the Sun that illuminates it for the same physical reason: blue light scatters more easily than red light. The red light passes more directly through the nebula or the atmosphere, while the blue light scatters and gives the nebula and the atmosphere their bluer colors. Therefore, it's no coincidence.


cagreen833

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Reply #2 on: Jul 27, 2018
TY


ErinKing

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


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