But the atmosphere that God surrounded our planet with puts brake on them and decelerates them. Most of them burn out as meteors, into gas due to the friction generated. A few surviving remnants of the firework only make it to the surface and still much fewer giant meteorites do hit disastrously. In other words the gigantic sure danger is reduced into next to nothing. Full dose as it comes from the sun is capable of scorching out skin and flesh.
Lesser exposure can cause skin cancer.
A raging solar wind of ions is constantly storming our planet. It intensifies during solar flares occurring once in eleven years. This is no less hostile to life than meteorites and UV rays. But earth s magnetic field surrounding it, with its poles about the poles of rotation, comes to the rescue. It shields away most of the ions and dumps the remaining at the sparsely populated polar regions, where they subsequently get neutralized.