What is the closest black hole to Earth?

Related questions

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3. Where does universe end?
4. What happens if a white hole and a black hole collide?
5. How will the universe end?
6. Who created black hole in interstellar?
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10. What is the black hole at the center of the Milky Way called?

Tags

1. #supermassive
2. #thousand
3. #appears
4. #closest
5. #years
6. #discovered
7. #inhabit
8. #light
9. #several
10. #center
11. #black
12. #galaxy
13. #environment
14. #earth
15. #about
16. #holes
17. #milky
18. #effect