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zoicyte t1_j1f9k6c wrote

Reply to comment by StrangeTangerine1525 in Mars' ancient atmosphere may not have had much oxygen after all by pecika

Guarantee the solar wind particles reach the ground in mars.

But yeah. UV by far is the main problem.

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StrangeTangerine1525 t1_j1fupe1 wrote

You got a source for that? Mars has an ionosphere and magnetopause surrounding it, charged particles can’t get past it, and if they do, they still have the rest of the atmosphere to go through.

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zoicyte t1_j1gakwm wrote

https://marspedia.org/Radiation#:~:text=The%20average%20natural%20radiation%20level,times%20the%20average%20on%20Earth.

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StrangeTangerine1525 t1_j1k5ceo wrote

https://lasp.colorado.edu/home/maven/the-solar-wind-and-its-interaction-with-mars-ionosphere/ and for more in depth https://www.nasa.gov/press-release/goddard/2020/mars-electric-currents. It appears the link you sent does list proton emission as a source of radiation, and that subatomic particles emitted by the Sun do reach the surface, though most are stopped by the atmosphere through processes linked above.

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