A Star on Earth

At the Energy Department’s Princeton Plasma Physics Lab, scientists are trying to accomplish what was once considered the realm of science fiction: create a star on Earth.

The National Spherical Torus Experiment (NSTX) is a magnetic fusion device that is used to study the physics principles of spherically shaped plasmas — hot ionized gases in which, under the right conditions, nuclear fusion will occur. Fusion is the energy source of the sun and all of the stars.

Not just limited to theoretical work, the NSTX is enabling cutting-edge research to develop fusion as a future energy source.