How two 'Suns' were shinning on China for 1000 seconds

China has achieved a significant milestone in nuclear fusion research with its Experimental Advanced Superconducting Tokamak (EAST) reactor, often referred to as the country’s "artificial sun." According to Chinese media reports cited by Live Science, the reactor successfully sustained plasma for an impressive 1,000 seconds, surpassing its previous record of 403 seconds set in 2023. This breakthrough marks a major step forward in the global pursuit of harnessing nuclear fusion as a revolutionary energy source.

Developing nuclear fusion has long been a scientific challenge due to the extreme conditions required, including sustaining temperatures over 100 million degrees Celsius. The ability to stabilize plasma for extended periods is seen as crucial for the technology’s advancement. "A fusion device must achieve stable operation at high efficiency for thousands of seconds to enable the self-sustaining circulation of plasma, which is critical for the continuous power generation of future fusion plants," explained Song Yuntao, director of the Institute of Plasma Physics at the Chinese Academy of Sciences, in a statement to Chinese state media. He added, "We hope to expand international collaboration via EAST and bring fusion energy into practical use for humanity."

While the EAST reactor has not yet achieved ignition—the point where nuclear fusion reactions become self-sustaining—the recent record represents a significant step toward maintaining the prolonged plasma confinement necessary for future reactors.


Decades of Research and New Horizons
Since its inception in 2006, EAST has undergone hundreds of thousands of tests, advancing the understanding of fusion energy. Building on this success, China has initiated the construction of a next-generation experimental fusion research facility in Anhui Province to accelerate the development and practical application of fusion energy.

The Promise of Nuclear Fusion
Often described as the "holy grail" of energy, nuclear fusion is the process that powers the sun, where atomic nuclei merge to release vast amounts of energy. Unlike nuclear fission, which splits atoms, fusion emits no greenhouse gases, produces minimal long-lived radioactive waste, and carries a lower risk of catastrophic accidents or misuse of materials.

By replicating the sun’s natural energy process, scientists hope to unlock a virtually unlimited energy source capable of addressing global energy challenges, combating climate change, and supporting humanity’s ambitions for deep-space exploration.

China’s recent achievement with EAST represents a promising step toward making this vision a reality, advancing both scientific understanding and international cooperation in the pursuit of sustainable fusion energy.