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Author Question: What do meteorites reveal about the solar system? A) They reveal that the solar system once ... (Read 145 times)

bobbysung

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on: Jul 27, 2018
What do meteorites reveal about the solar system?
 
  A) They reveal that the solar system once contained 10 planets.
  B) They reveal that the early solar system consisted mostly of hydrogen and helium gas.
  C) They reveal that the age of the solar system is approximately 4.6 billion years.
  D) They reveal that meteorites are much older than the comets and planets.
  E) Nothing, because they come from other star systems.

Question 2

What produces the 21-cm radio line that we can be used to map the Milky Way Galaxy?
 
  A) ionized hydrogen
  B) atomic hydrogen
  C) helium
  D) carbon monoxide
  E) molecular hydrogen


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at

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

C

Answer to Question 2

B


bobbysung

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Reply #2 on: Jul 27, 2018
TY


at

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Reply #3 on: Jul 27, 2018
You're welcome


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