The Alpha Magnetic Spectrometer, an antimatter and dark matter detector

iss061e142817 (Jan. 25, 2020) --- The Alpha Magnetic Spectrometer, an antimatter and dark matter detector, is wrapped in shielding labeled with the research device's acronym, AMS. Astronauts Andrew Morgan and Luca Parmitano worked over a series four spacewalks beginning in November 2019 to upgrade and restore the AMS thermal systems to ensure the astrophysics device continues science operations for years to come.