Among any number of questions about our Galaxy,which is one for which we have an answer at the present time?
A) Did the central black hole form first, or did the Galaxy form first?
B) Does the Galaxy have a central bar or not?
C) Was the Milky Way Galaxy formed by the merger of smaller galaxies?
D) What is heating the gas at the center of the Galaxy to 100 million K?
Correct Answer:
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