Yeah, that's nonsense. The radiation in low Earth orbit is only a bit less than above the magnetosphere, and most of that difference is from shadowing by the Earth itself. In contrast, there's a massive decrease in radiation from LEO to to sea level.
Radiation at ISS: 144 mSv per year
Radiation on a trip to Mars: ~340 mSv per year
Cosmic radiation at sea level: about 0.4 mSv per year
The atmosphere is doing the heavy lifting in shielding us from cosmic radiation, not the magnetosphere.
[1] https://files.mastodon.social/media_attachments/files/112/99...
* 13. Mai 1888 in Kopenhagen
† 21. Februar 1993 in Kopenhagen
That's 104 years, 9 months, and 8 days!
> This article is part of Overlooked, a series of obituaries about remarkable people whose deaths, beginning in 1851, went unreported in The Times.
Our protection from cosmic radiation is mostly due to Earth's thick atmosphere, not its magnetic field.
Primary defense against cosmic radiation: magnetic field
Secondary defense: atmosphere
https://science.nasa.gov/science-research/earth-science/eart...
Radiation at ISS: 144 mSv per year
Radiation on a trip to Mars: ~340 mSv per year
Cosmic radiation at sea level: about 0.4 mSv per year
The atmosphere is doing the heavy lifting in shielding us from cosmic radiation, not the magnetosphere.
https://earthscience.stackexchange.com/questions/14915/does-...