Mars dust may be less abrasive than lunar dust, spacesuit samples suggest
Tucked away among its sensors, cameras and navigation tools, NASA's Mars rover Perseverance is wearing small swatches of spacesuit material. A rover doesn't need a spacesuit, but the swatches—each less than a square inch (6.5 square centimeters) in size—serve an important purpose: They're helping scientists assess the potential damage caused by ubiquitous Martian dust.
NASA's Mars rover Perseverance carries miniature pieces of spacesuit material, aiding scientists in understanding the impact of Martian dust on equipment and human health. Scott VanBommel, a researcher at Washington University in St. Louis, led a study examining how dust affects Perseverance's materials, including Teflon. The findings, published in the Proceedings of the National Academy of Sciences, reveal that Martian dust may be less abrasive than lunar dust, with smoother particles that are less likely to scratch equipment or irritate human lungs.
However, the study also highlights the potential health risks posed by ultrafine particles measuring just 100 nanometers across and toxic compounds like perchlorates found in the Martian atmosphere. While these particles are unlikely to cause serious harm with brief exposure, their presence adds complexity to mission planning for future human exploration of Mars.
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