ACES unpacked at KSC

After having been shipped from Germany to Florida, ACES is now being unpacked at the Kennedy Space Center (KSC) on 14 March 2025. The Atomic Clock Ensemble in Space (ACES) is a European facility that will test fundamental physics from the outside of ESA’s Columbus module on the International Space Station. By creating a “network of clocks”, ACES will link its own highly precise timepieces with the most accurate clocks on Earth and compare them to measure the flow of time.