What Evidence Supports the Theory That There Is a Black

question 35

Multiple Choice

What evidence supports the theory that there is a black hole at the center of our galaxy?

• A)We observe an extremely bright X-ray source at the center of our galaxy.
• B)We can see gas falling into an accretion disk and central mass at the center of our galaxy.
• C)The motions of the gas and stars at the center indicate that it contains a million solar masses within a region only about 1 parsec across.
• D)We observe a large,dark object that absorbs all light at the center of our galaxy.
• E)all of the above

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