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Author Question: The Drake Equation is attempting to find A) the number of planets with life on them in the whole ... (Read 84 times)

a0266361136

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on: Jul 27, 2018
The Drake Equation is attempting to find
 
  A) the number of planets with life on them in the whole universe.
  B) the number of technological civilizations in the Galaxy at a given moment.
  C) the number of stars that might have planets orbiting them.
  D) the number of planets in the Milky Way Galaxy.
  E) the total number of terrestrial planets ever created.

Question 2

How could we determine the amount of interstellar dust between us and a distant star?
 
  What will be an ideal response?


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s.meritte

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

B

Answer to Question 2

The spectral lines would give us the temperature and luminosity of the star, but if much dust were present, the light would appear redder than the spectral class would let us expect. Also, the fainter it looks, compared to its estimated luminosity, the more dust is absorbing its light in transit.


a0266361136

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

ttt030911

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Reply 3 on: Yesterday
Excellent

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