AbstractA dark energy experiment is proposed, based on the dark energy research funded by the U.S. Department of Energy (DOE), Office of Science. The experiment would replicate the conditions of deep space; i.e., ultra-vacuum, isolation from the Earth's magnetic field, cryogenic temperatures, and an isotropic environment. The experiment may be able to detect whether the dark energy spectrum has a frequency-cubed distribution, the spectrum cutoff, and if there are any resonances. Such an experiment may be able to explain why the observed dark energy density is 122 orders of magnitude less than the theoretical prediction (which assumes a frequency cubed distribution and a cutoff at the Planck mass of 22 micrograms). The experiment might lead to a method for extracting dark energy for terrestrial and space-based uses.