What was Nancy Roman's contribution to astronomy?
Stellar classification
Quantum physics
Geology
Meteorology
Answer
Stellar classification was Nancy Roman's significant contribution to astronomy. She developed a system for classifying stars based on their temperature, luminosity, and spectral features. This system, known as the Yerkes Spectral Classification, is still widely used today and has provided astronomers with a fundamental understanding of stellar evolution and the composition of the universe.
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