It's in the interest of NASA (and the ESA) to hype the importance of the magnetosphere. After all, they are given money to investigate it, so the more important it is perceived, the more money they can expect to get.
> It's in the interest of NASA (and the ESA) to hype the importance of the magnetosphere. After all, they are given money to investigate it
I don’t know that that is a good reason to cause you to you think they’re lying.
NASA also extensively investigates Earth's atmosphere.
They use missions like Aura, CALIPSO, and upcoming ones like AOS and INCUS to monitor ozone, clouds, aerosols, and storms, providing crucial data for forecasts and climate science.
Assuming you're right, why do you suppose so many publications get it wrong?
Not only the NASA one I linked to but also Wikipedia for example: https://en.wikipedia.org/wiki/Cosmic_ray
Or the European Space Agency: https://www.esa.int/Science_Exploration/Space_Science/Cluste...
You will forgive me if I take their assessment more seriously than yours, but I'm open to correcting my understanding.