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Author Question: Who first attempted to find our position in the Galaxy, how did he do this, and why was his model ... (Read 12 times)

danielfitts88

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on: Jul 27, 2018
Who first attempted to find our position in the Galaxy, how did he do this, and why was his model flawed?
 
  What will be an ideal response?

Question 2

Eta Carinae is an example of a:
 
  A) black hole.
  B) supermassive star.
  C) red dwarf.
  D) nebula.
  E) stellar nursery.


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vkodali

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

William Herschel relied on star counts, and found most stars lie near the plane of the Milky Way, and in about equal numbers in all directions within this plane. He naturally took this to mean we lay near the center of a thin disk about 10,000 light years across. But dust near us blocks the vast majority of the Galaxy in visible wavelengths, so Herschel's survey included less than 10 of the whole Galaxy.

Answer to Question 2

B


danielfitts88

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Reply #2 on: Jul 27, 2018
Thanks


vkodali

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


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