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Author Question: Why did Carl Sagan say that we are star stuff? A) The composition of most stars (mostly hydrogen ... (Read 28 times)

NguyenJ

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on: Jul 27, 2018
Why did Carl Sagan say that we are star stuff?
 
  A) The composition of most stars (mostly hydrogen and helium) is about the same as the composition of our bodies.
  B) Cosmic rays reaching Earth from distant astronomical sources may be one source of mutations that help evolution along.
  C) Nearly every atom from which we are made once (before the solar system formed) was inside of a star.
  D) Nearly every atom from which we are made was once inside our star, the Sun.
  E) Sagan thought that all of us have the potential to be movie (or TV) stars like he was.

Question 2

What happens to most of the solar neutrinos between the Sun's core and Earth?
 
  What will be an ideal response?


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xMRAZ

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

C

Answer to Question 2

Two-thirds of them decay into a new form, only recently observed by Japanese physicists.


NguyenJ

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Reply 2 on: Jul 27, 2018
Gracias!

bigcheese9

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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