Cosmic rays are energetic particles that can be detected when they collide with the upper atmosphere, allowing us to infer their energy and direction. Ultrahigh-energy cosmic rays (UHECRs) are those that exceed the Greisen-Zatsepin-Kuzmin (GZK) limit, and their existence is a mystery that may hint at new physical theories. The Oh-My-God particle, observed in 1991, […]