Nuclear fusion: 1, 2, 3 Sun

07 Feb. 2023 - 07 Feb. 2024
Nuclear fusion is the process that occurs at the heart of stars. Several methods exist to try to reproduce it in the laboratory. What are the challenges of research in this field?
Nuclear fusion: 1, 2, 3 Sun


  • Alain Bécoulet Research Director at the CEA, Director of the Institute for Research on Fusion by Magnetic Confinement
  • Sébastien Lepape Laboratory Director at the Ecole Polytechnique in Palaiseau

Last December, American physicists made a major announcement on nuclear fusion. Could we be on the verge of a clean energy future?

For decades, we have been trying to reproduce nuclear fusion in the laboratory - a process that occurs at the heart of stars, like our sun. Mastering the conditions for releasing fusion energy would - in theory - allow us to benefit from almost infinite, almost clean energy. This is a godsend in the face of the need to get rid of fossil fuels. But does it really represent THE energy solution of the future? And what do the latest results mean?