Multiple Choice
What is the best evidence for an extremely massive black hole in the center of the Milky Way?
A) The orbits of stars in the center of the galaxy indicate that the presence of 3 to 4 million solar mass object in a region no larger than our Solar System.
B) Huge amounts of X-rays are pouring out of the center of the galaxy.
C) The center of our galaxy hosts a pulsar that is spinning so fast that it could only be a black hole.
D) We observe stars vanishing in the center of the Galaxy as they are sucked into the black hole.
Correct Answer:

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Correct Answer:
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