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Author Question: Soon after discovery, it was observed that quasars had a starlike appearance which was blurred by ... (Read 50 times)

laurencescou

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on: Jul 27, 2018
Soon after discovery, it was observed that quasars had a starlike appearance which was blurred by Earth's atmospheric seeing. Despite the blurring, it was realized that the intense energy-emitting regions of quasars must be small because they
 
  a. have high radial velocities.
  b. are very luminous.
  c. are surrounded by quasar fuzz.
  d. radiate huge amounts of energy.
  e. fluctuate rapidly on time scales as short as a few hours.

Question 2

The Crab nebula is
 
  a. a planetary nebula.
  b. a Bok globule.
  c. an open cluster.
  d. an absorption nebula.
  e. a supernova remnant.


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pikon

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

e

Answer to Question 2

e


laurencescou

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Reply #2 on: Jul 27, 2018
Thanks


pikon

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Reply #3 on: Jul 27, 2018
Welcome :)


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