jsc2023e026247 (2/7/2023) --- NASA astronaut Victor Glover tests hardware for the ISS External Microorganisms investigation at the Neutral Buoyancy Laboratory at NASA’s Johnson Space Center in Houston.

jsc2023e026248 (2/7/2023) --- NASA astronaut Victor Glover tests hardware for the ISS External Microorganisms investigation at the Neutral Buoyancy Laboratory at NASA’s Johnson Space Center in Houston.

jsc2023e026245 (12/6/2022) --- A member of the ISS External Microorganisms payload development team demonstrates removing a swab from the sampling caddy that is used by an astronaut during a spacewalk. A crew member uses the swabbing tool to collect samples from the exterior surface of the International Space Station at various locations as part of a study to examine whether a spacecraft releases microorganisms and, if so, how many and how far they may travel. Results could inform preparations for future human exploration missions to the Moon and Mars