What Evidence Now Exists for a Supermassive Black Hole at the Center

question 89

Multiple Choice

What evidence now exists for a supermassive black hole at the center of the Milky Way Galaxy?

• A) very bright, steady X-ray emissions from the galactic center
• B) observations of intense inflow of matter toward the center of the Galaxy as seen by light, Doppler-shifted toward the red, emitted by this matter
• C) very rapid motion of matter close to the nucleus of the Galaxy, requiring a very massive body to hold it in orbit
• D) very dark void in an otherwise bright region of space near the galactic center, indicating the presence of a black hole

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