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doit_the_clown doit_the_clown
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7 years ago
Why does the core of the Sun contain more helium and less hydrogen than the surface of the Sun?
A)   The hydrogen has been lifted out of the core by the Sun's magnetic field.
B)   Helium is heavier than hydrogen and has sunk toward the center in a process of chemical differentiation.
C)   Helium condenses more easily, so when the Sun was forming the core became helium-rich; vast quantities of hydrogen were added only after the core became massive enough.
D)   Thermonuclear reactions have converted much of the original hydrogen in the core into helium.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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papachulopapachulo
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doit_the_clown Author
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7 years ago
Smart ... Thanks!
Tabitha.davis
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Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
halyna
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2 hours ago
Good timing, thanks!
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