Multiple Choice
Why is Cecilia Payne's Ph.D.thesis sometimes called "the most important in astronomy"?
A) She was the first person to show that the Sun is mostly hydrogen.
B) She was the first person to analyze spectra of stars.
C) Her analysis of stellar spectra showed that stars generate their own light.
D) Her analysis of the Sun's spectrum resulted in the discovery of helium.
Correct Answer:
Verified
Correct Answer:
Verified
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