H i R e s / High Resolution Fly's Eye HiRes - the largest cosmic ray detector, and the only air fluorescence observatory in operation in the world at the start of the 21st Century. We are the world leaders in measuring the energy spectrum, composition, and arrival direction anisotropy of Ultra-High Energy Cosmic Rays (UHECR). in Volný čas > Přírodawith aircosmicdetectorhireslargestpírodarayvolný