The supermassive black hole at the center of the Galaxy has a diameter of approximately 8 *10-7 pc and is approximately 8000 pc away from Earth. What is the angular size of the black hole?
A) about 2 * 105 arcseconds
B) about 0.2 arcseconds
C) about 1.25 * 10-4 arcseconds
D) about 2 * 10-5 arcseconds
Correct Answer:
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