A very strong magnetic field and a spinning planet interacting with volcanic gases from one of the moons makes a particle accelerator in orbit of the planet.
Im not super knowledgeable on it but from what I understand it is a combination of solar winds, Jupiter's magnetosphere, and and Io's volcanoes blowing tons of shit into space, all intersecting together and blasting protons out.
It's more fun to have a conversation with someone though, you can have a more nuanced discussion. You shouldn't assume people are just being lazy, sometimes they just want to engage with the community.
This is a community of learners. No question is stupid. Don't assume laziness. By taking this attitude as a default, you stifle the curiosity of others. Healthy discussion shouldn't be discouraged.