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Author Question: The lookback time of the cosmological horizon is A) the Big Bang. B) the age of the universe. ... (Read 123 times)

Pineappleeh

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on: Jul 27, 2018
The lookback time of the cosmological horizon is
 
  A) the Big Bang.
  B) the age of the universe.
  C) 1 billion years.
  D) 10 billion years.

Question 2

While examining the spectrum of a galaxy you find all the hydrogen lines are shifted to longer wavelengths. This galaxy is
 
  A) moving away from us.
  B) moving towards us.
  C) expanding explosively.
  D) blue shifted.
  E) not forming new stars.


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kaykay69

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

B

Answer to Question 2

A


Pineappleeh

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Reply 2 on: Jul 27, 2018
Wow, this really help

ecabral0

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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