NASA astronauts (from left ) Jessica Meir and Christina Koch are at the robotics workstation controlling the Canadarm2 robotic arm to support the first spacewalk to repair the Alpha Magnetic Spectrometer.
iss061e045472 (Nov. 15, 2019) — NASA astronauts (from left ) Jessica Meir and Christina Koch are at the robotics workstation controlling the Canadarm2 robotic arm to support the first spacewalk to repair the Alpha Magnetic Spectrometer (AMS), the International Space Station’s cosmic particle detector. Astronauts Luca Parmitano of ESA (European Space Agency) and Andrew Morgan of NASA worked six hours and 39 minutes in the vacuum of space during the first of at least four planned AMS repair spacewalks.