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1. image of a black hole. Which black hole was the subject of this historic image?
- A. Sagittarius A
- B. Sagittarius A
- C. Sagittarius A
- D. Sagittarius A
Answer: Option A
Explanation:
This is the first image of Sagittarius A* (or Sgr A* for short), the supermassive black hole at the centre of our galaxy. It's the first direct visual evidence of the presence of this black hole.
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