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Author Question: The high _______________ of quasars reveals to astronomers that they must be very distant. Fill ... (Read 36 times)

elizabeth18

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on: Jul 27, 2018
The high _______________ of quasars reveals to astronomers that they must be very distant.
 
  Fill in the blank(s) with correct word

Question 2

We know that the central object in a planetary nebula has a surface temperature of at least ____ because the nebula contains large amounts of ionized hydrogen.
 
  a. 50 K
  b. 100 K
  c. 500 K
  d. 5,000 K
  e. 25,000 K


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cegalasso

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

redshift

Answer to Question 2

e


elizabeth18

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

aruss1303

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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