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Author Question: How did Herschel try to map our Galaxy 200 years ago, and why did he fail? What will be an ideal ... (Read 23 times)

humphriesbr@me.com

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on: Jul 27, 2018
How did Herschel try to map our Galaxy 200 years ago, and why did he fail?
 
  What will be an ideal response?

Question 2

The first successful landers on the surface of Mars were:
 
  A) Mariners 4 and 5 in 1965.
  B) Vikings 1 and 2 in 1976.
  C) Voyagers 1 and 2 in 1979.
  D) Pathfinder and Sojourner in 1997.
  E) Spirit and Opportunity in 2004.


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orangecrush

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

His star counts revealed the galactic disk, but the dark nebulae of dust blocked everything except the closer spiral arms, making him think we lay near the center.

Answer to Question 2

B


humphriesbr@me.com

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Reply #2 on: Jul 27, 2018
Thanks


orangecrush

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


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