H.E.S.S. is one of the leading observatories studying very-high-energy gamma-ray astrophysics.

H.E.S.S. is a system of Imaging Atmospheric Cherenkov Telescopes that investigates cosmic gamma rays in the energy range from 10s of GeV to 10s of TeV. The name H.E.S.S. stands for High Energy Stereoscopic System.

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