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The Primary Atomic Reference Clock in Space or PARCS was an atomic-clock mission scheduled to fly on the International Space Station (ISS) in 2008, but cancelled to make way for the Vision for Space Exploration. 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. PARCS was to fly concurrently with the (SUMO) a different type of clock that was to be compared against the PARCS clock to test certain theories. The objectives of the mission were to have been:

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  • Bei der Primary Atomic Reference Clock in Space oder kurz PARCS handelt es sich um ein Atomuhr-Projekt, welches neben den Projekten , und ACES, auf der Internationalen Raumstation (ISS) durchgeführt werden sollte, 2008 aber abgesagt wurde. Verwendet werden sollte eine lasergekühlte Atomuhr und ein Zeitübertragungssystem, welches auf die GPS-Satelliten zurückgreift. PARCS wird parallel zum Supraleitenden Mikrowellenoszillator betrieben, um Zeitvergleiche durchzuführen und nach winzigen Abweichungen von den Vorhersagen der allgemeinen Relativitätstheorie zu suchen. (de)
  • The Primary Atomic Reference Clock in Space or PARCS was an atomic-clock mission scheduled to fly on the International Space Station (ISS) in 2008, but cancelled to make way for the Vision for Space Exploration. 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. PARCS was to fly concurrently with the (SUMO) a different type of clock that was to be compared against the PARCS clock to test certain theories. The objectives of the mission were to have been: * Test gravitational theory * Study laser-cooled atoms in microgravity * Improve the accuracy of timekeeping on earth (en)
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  • Bei der Primary Atomic Reference Clock in Space oder kurz PARCS handelt es sich um ein Atomuhr-Projekt, welches neben den Projekten , und ACES, auf der Internationalen Raumstation (ISS) durchgeführt werden sollte, 2008 aber abgesagt wurde. Verwendet werden sollte eine lasergekühlte Atomuhr und ein Zeitübertragungssystem, welches auf die GPS-Satelliten zurückgreift. PARCS wird parallel zum Supraleitenden Mikrowellenoszillator betrieben, um Zeitvergleiche durchzuführen und nach winzigen Abweichungen von den Vorhersagen der allgemeinen Relativitätstheorie zu suchen. (de)
  • The Primary Atomic Reference Clock in Space or PARCS was an atomic-clock mission scheduled to fly on the International Space Station (ISS) in 2008, but cancelled to make way for the Vision for Space Exploration. 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. PARCS was to fly concurrently with the (SUMO) a different type of clock that was to be compared against the PARCS clock to test certain theories. The objectives of the mission were to have been: (en)
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  • PARCS (de)
  • Primary Atomic Reference Clock in Space (en)
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