NASA rahastatav missioon hõlmas laserjahutusega tseesiumi aatomikella ja ajasiirdesüsteemi, mis kasutas globaalse positsioneerimissüsteemi (GPS) satelliite, uurimist. Kosmose primaaraatomikell pidi lendama üheaegselt ülijuhtiva mikrolaine-ostsillaatoriga (SUMO), st teist tüüpi kellaga, mida kavatseti teatud teooriate kontrollimiseks kosmose primaarkellaga võrrelda.
The mission, to have been funded by NASA, involved a laser-cooled caesium atomic clock, and a time-transfer system using Global Positioning System (GPS) satellites. Primary atomic reference clock in space (PARCS) was to fly concurrently with the Superconducting Microwave Oscillator (SUMO) a different type of clock that was to be compared against the PARCS clock to test certain theories.
