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Author Question: Active galaxies are believed to be the product of collisions and interactions because ____. a. ... (Read 20 times)

haleyc112

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on: Jul 27, 2018
Active galaxies are believed to be the product of collisions and interactions because ____.
 
  a. they are always seen in contact with another galaxy
 b. the transfer of matter would explain the black hole eruption
 c. the collision of individual stars would explain the black hole eruption
  d. central bulges are formed by collisions
 e. supermassive black holes are necessary for galactic collisions

Question 2

The _______________ effect changes the observed wavelength of an emitted photon if the source is moving toward or away from the observer.
 
  Fill in the blank(s) with correct word


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prumorgan

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

b

Answer to Question 2

Doppler


haleyc112

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Reply #2 on: Jul 27, 2018
Thank you!


prumorgan

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Reply #3 on: Jul 27, 2018
Always glad to help...


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