BESS stands for the BESS (Balloon Experiment with a Superconducting Spectrometer), which is an experimental physics program focused on studying cosmic rays, in particular the properties of high-energy particles from space. BESS utilizes balloon-borne experiments to carry a sophisticated superconducting spectrometer to high altitudes, where the atmosphere is thinner, allowing for clearer observations of cosmic rays that would otherwise be obscured by air mass.
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