Most Accurate Clock in Existence to be Sent to Space

From Gizmodo:

Anyone visiting the International Space Station from 2014 won't have any excuses for poor timekeeping, with the cold-atom clock being sent up there as part of the Atomic Clock Ensemble in Space (ACES) project. Compared to Earth's clocks, which keep time thanks to GPS satellites, the PHARAO (Projet d'Horloge Atomique par Refroidissement d'Atomes en Orbite) clock will be 100 times more accurate thanks to the unique way it works in space.

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