 matter of living in the universe. They're unavoidable. You'll get some of them even here on Earth. But of course, we have a big atmosphere above us here. We can also go in houses and have other protective elements. The biggest protector we have is the Earth's magnetosphere, which helps deflect a lot of these particles. But in space, you get farther away from some of this protection. You get farther away from the atmosphere and you start to get farther away from the protection of some of the Van Allen belts, although you're still mostly within them. So what this means is we worry about radiation