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Author Question: Assuming that our ideas about how hot Jupiters ended up on their current orbits are correct, why ... (Read 102 times)

ARLKQ

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on: Jul 27, 2018
Assuming that our ideas about how hot Jupiters ended up on their current orbits are correct, why didn't our own solar system end up with any hot Jupiters?
 
  A) Our solar nebula must have been blown into space shortly after the formation of the jovian planets.
  B) Our jovian planets must have migrated outward from inside the orbit of Mercury.
  C) Our solar nebula must have stuck around for an unusually long time after the formation of jovian planets.
  D) The existence of Earth and the other terrestrial planets prevented the jovian planets from migrating inward.

Question 2

Interstellar gas is composed of
 
  A) only hydrogen.
  B) 90 hydrogen, 9 helium by weight.
  C) 10 hydrogen, 90 helium by numbers of atoms.
  D) some hydrogen, but mainly carbon dioxide.
  E) ammonia, methane, and water vapor.


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aadams68

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

A

Answer to Question 2

B


ARLKQ

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Reply 2 on: Jul 27, 2018
:D TYSM

alvinum

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Reply 3 on: Yesterday
Excellent

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