The Cold Atom Lab (CAL) is a first of its kind quantum physics science instrument that utilizes the microgravity environment of the International Space Station (ISS) for ultra-cold atom fundamental physics experiments. CAL was installed into the US Destiny Lab of ISS by astronauts in May 2018. The CAL instrument was designed for a 3-year mission life and has limited capability to be serviced or upgraded on orbit. Due to its great success the CAL team was requested to upgrade a specific electronic circuit card that was never intended to be replaced on orbit. As such, the instrument was not designed to accommodate easy access to the circuit cards to enable replacement. Therefore, the CAL team at Jet Propulsion Lab (JPL) formed a collaborative team with experts from Marshall Space Flight Center (MSFC) and Johnson Space Center (JSC) to create a new capability for Augmented Reality (AR) to be utilized on ISS that enabled real time astronaut on orbit guidance for critical activities. For the first time ever during an Intra-Vehicular Activity (IVA) a payload developer on the ground (CAL team) was able to see the real-time astronaut perspective video stream and simultaneously direct the astronaut via voice commands as well as with virtual visual annotations in the astronaut's field of view. This AR capability enabled the complex process of accessing and replacing the circuit card and restoring the full functionality of the CAL instrument.
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