Earlier this year, the project’s prime contractor, Safran Timing Technologies, released the first version of an All-European Maser. This first step helps to address immediate customer needs while paving the way for the final, fully state-of-the art European ground active hydrogen maser.

In August 2025, ESA deployed the All-European-Maser at one of its deep space ground stations, located in New Norcia, Australia. This critical phase will put the clock in operational conditions and demonstrate its reliability supporting all ESA deep-space missions.

"Developing a sovereign European active hydrogen maser system is a strategic necessity for Europe’s autonomy in high-precision positioning, navigation and timing (PNT). Only a handful of companies in the world can manufacture such ultra-stable clocks. This achievement demonstrates Europe’s capability in securing its technological independence,” says Sinda Mejri, ESA’s project manager of the All-European Maser development.