What is more powerful than a nuclear bomb?

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Tags

1. #energy
2. #equivalent
3. #releasing
4. #atomic
5. #bombs
6. #hydrogen
7. #better
8. #hiroshima
9. #known
10. #powerful
11. #magnitudes
12. #blasts
13. #several
14. #created
15. #nagasaki
16. #weapon
17. #higher
18. #kilotons
19. #thermonuclear