Perseverance dust measurements could shape protection for future Mars crews
A NASA Jet Propulsion Laboratory report released October 26 describes fine and ultrafine dust sticking to material samples on Perseverance. The measurements give US mission designers information about particles that future suits and habitats would need to keep out. They are rover observations, not evidence of illness in astronauts on Mars.
News date: 2026-10-26 · Checked: 2026-10-27 (Asia/Bangkok)
A NASA Jet Propulsion Laboratory report released October 26 describes fine and ultrafine dust sticking to material samples on Perseverance. The measurements give US mission designers information about particles that future suits and habitats would need to keep out. They are rover observations, not evidence of illness in astronauts on Mars.
Three key points
- PIXL detected particles smaller than earlier on-site measurements resolved.
- Different target materials collected different particle sizes.
- NASA says the findings could inform suits, habitats and dust-removal procedures.
A calibration target becomes a dust experiment
The rover carries spacesuit-material swatches on the SHERLOC calibration target, while PIXL uses its own target materials. Because PIXL cannot directly detect elements in its Teflon target, elemental signals from that surface reveal dust resting on it.
The report describes dust averaging about 2 micrometers on some surfaces and particles down to roughly 100–300 nanometers on others. It does not say every particle on the rover is the same size or that the entire Martian atmosphere was sampled.
Design evidence, with research still to come
NASA links the results to material choices, protective coatings and ways to limit dust entering living quarters. The agency describes static electricity as an apparent influence on which grains remain attached.
The release says the paper is scheduled for publication October 27 in PNAS. This article is based on the original October 26 mission report, rather than claiming to have evaluated an unpublished paper. The 2023 terrain photograph provides surface context, not a view of the new measurement targets.
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