Argentina has been selected for NASA's return to the moon, with an Argentine-built microsatellite, ATENEA, designed to test navigation systems and measure radiation far beyond Earth's orbit. The satellite will be one of four international payloads chosen by NASA from nearly 50 countries to accompany Artemis II, the first crewed lunar mission in over a century. The engineering faculty at the University of Buenos Aires and support from Argentina's national space agency CONAE are also contributing to the mission. The mission offers a rare opportunity for Argentine scientists to study conditions in deep space, where radiation levels are higher and more volatile than in low-Earth orbit.