Calorimetric Electron Telescope

The Calorimetric Electron Telescope (CALET) is a scientific instrument designed to study high-energy cosmic rays, particularly electrons and gamma rays in the energy range from a few GeV (giga-electronvolts) up to several TeV (tera-electronvolts). It was launched to the International Space Station (ISS) in 2015 as part of a collaborative effort involving institutions from Japan, the United States, and Italy.