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Author Question: Based on star counts, 100 years ago most astronomers thought: A) we lay about 30,000 ly out from ... (Read 30 times)

kfurse

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on: Jul 27, 2018
Based on star counts, 100 years ago most astronomers thought:
 
  A) we lay about 30,000 ly out from the center of the Galaxy.
  B) we lay near the center of a disk about 10 kpc wide and 2 kpc thick.
  C) we lay in a spiral arm of the largest galaxy in the universe.
  D) we lay near the edge of the only galaxy in the universe.
  E) we were not a part of any structure larger than the known solar system.

Question 2

Radio astronomy uses ________ to achieve better resolution than optical telescopes.
 
  Fill in the blank(s) with correct word


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Sassygurl126

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

B

Answer to Question 2

interferometry


kfurse

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Reply 2 on: Jul 27, 2018
Excellent

cpetit11

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

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