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Home Q & A Board Science-Related Homework Help Physics
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staedtler staedtler
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7 years ago
Harlow Shapley first located the center of our Galaxy in 1917 by
A)   measuring the positions of supernova explosions throughout the Galaxy.
B)   observing the distribution of globular clusters in the galactic halo.
C)   redshift measurements on stars in the galactic plane and disk.
D)   observing the distribution of hydrogen gas, measured by 21-cm radio emission.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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papachulopapachulo
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7 years ago
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staedtler Author
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7 years ago
I really appreciate your help!
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