| 21. | Once nuclear fusion begins, that's truly when a star is born.
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| 22. | For elements lighter than iron on the periodic table, nuclear fusion releases energy.
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| 23. | The European Union has a strongly coordinated nuclear fusion research programme.
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| 24. | Finally, it's hot enough for real star business to begin _ nuclear fusion.
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| 25. | South Korea is also a member of the ITER nuclear fusion research project.
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| 26. | :: Are you interested in nuclear fusion or nuclear fission?
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| 27. | If the temperature gets high enough, nuclear fusion will ignite and form a protostar.
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| 28. | The sun's luminous output is powered by nuclear fusion reactions in its central core.
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| 29. | The decades-long effort to build a nuclear fusion reactor has received a major boost.
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| 30. | From 1957, Heisenberg was interested in plasma physics and the process of nuclear fusion.
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