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Author Question: About how many stars has the Hipparcos mission given us accurate distance data on? A) about ... (Read 45 times)

itsmyluck

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on: Jul 27, 2018
About how many stars has the Hipparcos mission given us accurate distance data on?
 
  A) about 3,000, about half of what you can see with the naked eye alone
  B) over 6000, the visible naked eye stars and some seen in binoculars
  C) 60,000, those within about 100 light years of us
  D) a million, those with parallaxes of .005 or larger
  E) over 100 billion, almost every star in the galaxy

Question 2

Ice has been detected near the poles of both the Moon and Mercury.
 
  Indicate whether the statement is true or false


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Dominic

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

D

Answer to Question 2

TRUE


itsmyluck

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Reply #2 on: Jul 27, 2018
TY


Dominic

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Reply #3 on: Jul 27, 2018
You're welcome


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