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DOE provides the majority (approximately 90%) of federal support for high-energy and nuclear physics research. This work uses advanced accelerator facilities as well as detectors placed underground and in space to understand the fundamental nature of matter, energy, space, time and the properties and interactions of atomic nuclei and nuclear matter.

One of DOE's long-term goals is to advance plasma science and harness fusion as a viable energy source. To this end, the agency supports research on the physics of plasmas and is exploring innovative paths to fusion energy.