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NASArCOs Worst Fear? Martian Dust Is Way Deadlier Than You Think
Astronomers have spotted a mysteriously rCLdeadrCY galaxy that stopped
forming stars just 700 million years after the Big Bang. Its discovery
is shaking up everything we thought we knew about how galaxies evolve.

Melissa Ait Lounis
Melissa Ait Lounis
Published on April 6, 2025
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NasarCOs Worst Fear Martian Dust Is Way Deadlier Than You ThinkNASArCOs
Worst Fear? Martian Dust Is Way Deadlier Than You Think | The Daily
Galaxy --Great Discoveries Channel
With ambitions for human missions to Mars gaining momentum, scientists
are raising red flags over a stealthy and potentially dangerous
adversary: Martian dust. Recent research reveals that the planetrCOs fine, toxic particles could cause long-term damage to the lungs, thyroid, and
other vital organs of astronauts exposed during extended surface missions.


A Deadly Legacy Of Silicates And Perchlorates
A team from the University of Colorado Boulder has published the most
detailed assessment yet on the health risks posed by Martian dust,
featured in the journal GeoHealth.

They identified a mix of hazardous substances including silicates, iron oxides, beryllium, arsenic, and the particularly concerning perchlorates
rCo highly oxidizing compounds linked to thyroid dysfunction. These substances, when inhaled over extended periods, may scar lung tissue and disrupt endocrine processes.

The Apollo Warning And Mars-specific Concerns
Drawing from historical parallels, Justin Wang, lead author of the study
and a medical student at the Keck School of Medicine at the University
of Southern California, referenced Apollo-era experiences where
astronauts exposed to lunar dust reported respiratory issues and eye irritation.

rCLThis isnrCOt the most dangerous part about going to Mars,rCY Wang said. rCLBut dust is a solvable problem, and itrCOs worth putting in the effort to develop Mars-focused technologies for preventing these health problems
in the first place.rCY


Dust Storms, Micro-particles, And Exposure Risks
Red planet is inherently a dusty world. rCLWe think there could be 10
meters of dust sitting on top of the bigger volcanoes,rCY noted Brian
Hynek, co-author and geologist at the Laboratory for Atmospheric and
Space Physics at CU Boulder.

rCLYourCOre going to get dust on your spacesuits, and yourCOre going to have to deal with regular dust storms,rCY he explained. The fine size of
Martian dust, around 3 micrometers, enables it to bypass natural lung defenses.

rCLThatrCOs smaller than what the mucus in our lungs can expel,rCY Wang said. rCLSo after we inhale Martian dust, a lot of it could remain in our lungs
and be absorbed into our bloodstream.rCY

Health Effects Linked To Earth Analogs
Several components of Martian dust mirror health risks already known on
Earth. Silica, for example, is a familiar threat in industries like
mining and glassblowing, where exposure can cause silicosis rCo a
condition that scars lung tissue and impairs breathing.

More troubling are perchlorates, rarely encountered on Earth but
abundant on Mars. These compounds may interfere with thyroid function
and cause anemia.


Developing Countermeasures Before Liftoff
With time still available before humans reach Mars, the team advocates
for protective strategies, including iodine supplements to support
thyroid function and custom filtration systems designed to capture
ultra-fine Martian dust.

rCLPrevention is key. We tell everyone to go see their primary care
provider to check your cholesterol before it gives you a heart attack,rCY
Wang said. rCLThe best thing we can do on Mars is make sure the astronauts arenrCOt exposed to dust in the first place.rCY


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