Cosmic rays are ultra-fast particles that constantly hit Earth from space. Scientists think the most powerful ones are launched by exploding stars, black holes, and distant galaxies, but their exact origins remain mysterious because magnetic fields scramble their paths

Cosmic rays are ultra-fast particles that constantly hit Earth from space. Scientists think the most powerful ones are launched by exploding stars, black holes, and distant galaxies, but their exact origins remain mysterious because magnetic fields scramble their paths

https://www.space.com/science/particle-physics/what-flings-mysteriously-powerful-particles-called-cosmic-rays-at-earth