Airborne particles collected in the US Orbital Segment during the Aerosol Sampling Experiment (Aerosol Samplers). Top (from left to right): a stainless-steel particle collected near an exercise machine in Node 3, a silver particle collected on an overhead supply diffuser in Node 3, a skin flake (ubiquitous throughout the International Space Station cabin). Bottom (from left to right): a fiberglass particle (ubiquitous throughout the space station cabin), an antiperspirant particle collected in Node 2, an iron particle collected in the US Lab. The Aerosol Sampler collects airborne particles in the International Space Station’s cabin air and returns them to Earth so scientists can study the particles with powerful microscopes. Image courtesy of NASA.

jsc2025e036184 (4/4/2025) --- Airborne particles collected in the US Orbital Segment during the Aerosol Sampling Experiment (Aerosol Samplers). Top (from left to right): a stainless-steel particle collected near an exercise machine in Node 3, a silver particle collected on an overhead supply diffuser in Node 3, a skin flake (ubiquitous throughout the International Space Station cabin). Bottom (from left to right): a fiberglass particle (ubiquitous throughout the space station cabin), an antiperspirant particle collected in Node 2, an iron particle collected in the US Lab. The Aerosol Sampler collects airborne particles in the International Space Station’s cabin air and returns them to Earth so scientists can study the particles with powerful microscopes.

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