How Three Fusion Reactor Designs Could Power Tomorrow

image via New Scientist

September 16, 2025, 10:00 AM

• •Fusion research explores methods to recreate the sun's energy on Earth.
• •Tokamaks, stellarators, and inertial confinement reactors are being developed.
• •Sustained fusion requires high temperatures, densities, and containment.
• •Challenges include plasma turbulence and particle control.

Nuclear fusion, the process of combining atoms to release energy, holds the promise of a green and sustainable energy source. Various reactor designs like tokamaks and stellarators are being tested worldwide, each with their own advantages and disadvantages in containing and heating plasma to initiate fusion. Achieving sustained fusion faces challenges in maintaining the necessary temperatures and densities while preventing turbulence and particle collisions with reactor hardware. Despite these hurdles, the growing energy demands and the need to address climate change drive the ongoing research and development efforts in fusion technology.

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