NASA -Astronauts Complete 2nd Phase to Repair Alpha Magnetic Spectrometer- November 25, 2019

Astronaut Andrew Morgan is tethered to the Starboard-3 truss segment work site during the second spacewalk to repair the International Space Station’s cosmic particle detector, the Alpha Magnetic Spectrometer. via NASA https://ift.tt/2pNSW0j November 25, 2019