nuclear-fusion

Fusion startups are betting on magnets, lasers, and pulsed systems. See how each design works, what milestones are verified, and what is still unproven.

A comprehensive look at the state of nuclear fusion in 2026 — the NIF ignition breakthrough, ITER tokamak, stellarators, inertial confinement, and the private companies racing to deliver fusion power to the grid.

How the Sun works: proton-proton fusion in the core, layers from radiative zone to corona, solar wind, sunspots, and the Sun's far future.

Controlling fusion plasma is one of science's hardest control problems. DeepMind and others are using deep reinforcement learning to solve it.

How detecting neutrinos from the sun revealed fundamental physics mysteries

How the National Ignition Facility achieved fusion net energy gain for the first time, igniting hope for unlimited clean energy

Fusion is the energy source that powers the Sun. Replicating it on Earth could provide nearly limitless clean energy. After 70 years of effort, we're closer than ever — but harder than expected.