The University of Colorado’s Laboratory for Atmospheric and Space Physics (LASP) has selected the Ada language and AdaCore’s GNAT Pro for the ARM Cortex product for NASA’s Climate Absolute Radiance and Refractivity Observatory (CLARREO) Pathfinder mission. CLARREO Pathfinder will deploy a Reflected Solar spectrometer on the International Space Station (ISS) starting in 2021 that will detect the complete spectrum of radiation from the Sun reflected by Earth.