October 24, 2023

ACES Platform carrying the PHARAO instrument

ACES Platform

ACES (Atomic Clock Ensemble System) is an ESA project comprising two atomic clocks:
PHARAO: caesium cold-atom clock developed by CNES
SHM: Space Hydrogen Maser developed in Switzerland.
ACES is about 1 m³, weighs 225 kg and consumes 450 W of electrical power.