| ACES | Atomic Clock Ensemble in Space |
| AOM | Acousto-Optical Modulator |
| ECL | Extended Cavity Laser diode |
| ISS | International Space Station |
| PHARAO | Projet d'Horloge Atomique par Refroidissement d'Atomes en Orbite |
| SH | Source Micro-onde |
| SHM | Space Hydrogen Maser |
| SL | Source Laser |
| TC | Tube Césium |
| UGB | Unité Gestion Bord |
| USO | Ultra Stable Oscillator |
1997 BIRTH OF THE PHARAO PROJECT Update: 01/02/2012
January 2, 2012
15 December 2009, CNES and ESA signed an agreement concerning ACES, the world’s most accurate atomic space clock, scheduled to be flown to the ISS in 2013.
January 6, 2010
Construction of CNES’s PHARAO atomic clock is getting underway in preparation for its planned launched in 2013. Among other things, it will set out to test Einstein’s theory of...
June 2, 2009