What is the SECOND most abundant element in the universe (after hydrogen) ?
A) helium
B) carbon
C) nitrogen
D) iron
Correct Answer:
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Q11: The light from a distant cloud of
Q12: A star cluster at a great distance
Q13: The light from a distant cloud of
Q14: How much of the visible mass of
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Q17: Most interstellar matter is too cold to
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