DOE provides the majority (approximately 90%) of federal support
for high-energy and nuclear physics research, which 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.
The Department of Energy's Office of Science is the single largest supporter of basic research in the physical sciences in the United States and is working to address some of the most pressing challenges of our time.