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Author Question: Most of the atoms in the universe are thought to be A) hydrogen. B) helium. C) about equal ... (Read 137 times)

D2AR0N

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on: Jul 29, 2018
Most of the atoms in the universe are thought to be
 
  A) hydrogen.
  B) helium.
  C) about equal amounts of hydrogen and helium.
  D) iron.
  E) elements unknown at present.

Question 2

What event marks the birth of a star, and what event marks its death?
 
  What will be an ideal response?


leeeep

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A stellar body becomes a star when thermonuclear fusion is ignited in its core. Death occurs when its nuclear fires go outwhen nuclear fusion ceases.


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D2AR0N

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Reply #2 on: Jul 29, 2018
Thank you!


leeeep

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Reply #3 on: Jul 29, 2018
Always glad to help...


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