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Author Question: Pluto's density is most similar to: A) the terrestrial planets. B) the jovian planets. C) moons ... (Read 94 times)

folubunmi

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on: Jul 27, 2018
Pluto's density is most similar to:
 
  A) the terrestrial planets.
  B) the jovian planets.
  C) moons of the jovian planets.
  D) Mercury, but nor Venus, Earth, or Mars.
  E) Saturn, but not Jupiter, Uranus, or Neptune.

Question 2

What is interstellar reddening and explain how it can be used to map out the distribution of dust in a cloud.
 
  What will be an ideal response?


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otokexnaru

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

C

Answer to Question 2

Short wavelength (blue) light passing through a cloud is blocked more than longer (redder) wavelengths by the dust grains. Thus starlight passing through a cloud appears redder than in the absence of a cloud. The amount of reddening can be measured by comparing a star's observed color to that expected for its spectral type. By looking at many stars and measuring the reddening toward each one, a map of the dust distribution can be built up.


folubunmi

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Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

tkempin

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Reply 3 on: Yesterday
Excellent

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