A nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy.
1And the hotter the star, the faster the nuclear fusion reaction and the sooner it will use up its fuel.
2Such mind-boggling temperatures are crucial to achieving sustainable nuclear fusion reactions, which promise an inexhaustible energy source.
3These are formed when the nuclear fusion reactions at the centre of a star can no longer support its structure.
Translations for nuclear fusion reaction