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Author Question: In its most energetic phase, a quasar can probably only last A) a few days. B) a few years. C) ... (Read 41 times)

misspop

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on: Jul 27, 2018
In its most energetic phase, a quasar can probably only last
 
  A) a few days.
  B) a few years.
  C) a few thousand years.
  D) a few million years.
  E) a few billion years.

Question 2

To get the space velocity of a star in three dimensions, you need its proper motion, distance, and radial velocity.
 
  Indicate whether the statement is true or false


Sarahjh

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

D

Answer to Question 2

TRUE


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