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Perseverance finds ultrafine Martian dust that could pose a challenge for crewed missions

NASA’s Perseverance rover measured ultrafine dust particles on Mars, including particles small enough to raise concerns about astronaut exposure and contamination of spacesuit materials. The findings underscore the need to account for dust—moved by winds, dust devils and storms—when planning future human missions to the planet.

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Artemis I measurements found lunar radiation higher than in Earth orbit, but less elevated than expected

Radiation measurements aboard the uncrewed Orion spacecraft during NASA’s Artemis I mission found that cosmic radiation near the Moon exceeds levels in Earth orbit, though by less than scientists might have anticipated. The data add to the evidence needed to assess radiation exposure on future crewed lunar missions.

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NASA’s yearlong Mars simulation ends as crew exits habitat; underwater analog tests probe spacewalk safety

Four volunteers who spent more than a year living and working in a simulated Mars mission are due to leave their habitat on Saturday, Oct. Separately, analog astronaut Michaela Musilova led low-visibility underwater “spacewalks” to test astronaut safety and communications protocols—using terrestrial simulations to examine challenges crews may face during space missions.

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