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Author Question: Earth behaves as an artificial pulsar, with the strongest pulses for alien observers when North ... (Read 58 times)

tiffannnnyyyyyy

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on: Jul 27, 2018
Earth behaves as an artificial pulsar, with the strongest pulses for alien observers when North America is either rising or setting.
 
  Indicate whether the statement is true or false

Question 2

Why would anyone be interested in mining material from an asteroid?
 
  What will be an ideal response?


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karlss

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

TRUE

Answer to Question 2

The iron-rich asteroids, especially, should contain a high proportion of heavy elements that sank to Earth's core and are therefore very rare on Earth's surface (and consequently expensive).


tiffannnnyyyyyy

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Reply 2 on: Jul 27, 2018
Excellent

xthemafja

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

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