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Author Question: If a star system at 30 parsecs distance is found to be broadcasting intelligent radio signals, then ... (Read 50 times)

Themember4

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If a star system at 30 parsecs distance is found to be broadcasting intelligent radio signals, then their news is already ________ years old.
 
  Fill in the blank(s) with correct word

Question 2

The impact of which comet helped establish the importance of impacts in our solar system?
 
  A) Kohoutek
  B) Hale-Bopp
  C) Halley's Comet
  D) Comet ISON
  E) Shoemaker-Levy 9



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frankwu0507

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Answer to Question 1

about 93

Answer to Question 2

E




Themember4

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Reply 2 on: Jul 27, 2018
Wow, this really help


momolu

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Reply 3 on: Yesterday
Gracias!

 

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