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Author Question: How do we know that there are intergalactic clouds between a distant quasar and us? A) We see ... (Read 75 times)

asan beg

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on: Jul 27, 2018
How do we know that there are intergalactic clouds between a distant quasar and us?
 
  A) We see hydrogen emission lines at redshifts smaller than that of the quasar.
  B) We see hydrogen absorption lines at redshifts smaller than that of the quasar.
  C) We see hydrogen emission lines at redshifts greater than that of the quasar.
  D) We see hydrogen absorption lines at redshifts greater than that of the quasar.
  E) We see that the emission lines from the quasar are lessened by intervening gas and dust.

Question 2

According to Gwen back on Earth, about how long does it take Jackie to reach Vega?
 
  A) about a month
  B) about 10 years
  C) about 25 years
  D) about 100 years
  E) about 1,000 years


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AaaA

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

B

Answer to Question 2

C


asan beg

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Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


AaaA

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Reply #3 on: Jul 27, 2018
Great! Please up vote :D


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