NASA’s Perseverance Offers Clues to Protect Crews From Mars Dust

Lunar dust scratched visors, degraded outer spacesuit layers, and damaged their seals during NASA’s Apollo missions, and some crew members reported symptoms similar to hay fever.
Rounded by wind-driven collisions with other particles, dust grains on Mars are less abrasive than those on the Moon. They also are enriched in sulfur, chlorine, and iron and contain more silica than lunar dust. Regional and global dust storms on Mars can keep the grains recirculating throughout the atmosphere as well.
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