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Author Question: Spectra of stars often show narrow absorption lines from interstellar matter. What type of ... (Read 57 times)

formula1

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on: Jul 27, 2018
Spectra of stars often show narrow absorption lines from interstellar matter. What type of interstellar matter produces these?
 
  A) dust
  B) neutral gas
  C) ionized gas
  D) molecules
  E) All of the above.

Question 2

Einstein's ________ is a candidate for the dark energy that would be a repulsive force that may exist throughout space, and accelerate the expansion of the universe.
 
  Fill in the blank(s) with correct word


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bdobbins

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

B

Answer to Question 2

cosmological constant


formula1

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Reply 2 on: Jul 27, 2018
Gracias!

juliaf

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Reply 3 on: Yesterday
Excellent

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