👉 Endangered:Light Particles, also known as ultra-high-energy cosmic rays (UHECRs), are a class of extremely energetic particles that originate from outer space and travel at nearly the speed of light. These particles, primarily composed of protons and atomic nuclei, are so powerful that they can penetrate deep into the Earth's atmosphere and even shield the planet's surface to some extent. Despite their high energy, only a small fraction of UHECRs reach Earth, making them extremely rare and thus "endangered." Their exact sources remain a mystery, but theories suggest they could originate from supernovae, active galactic nuclei, or other extreme cosmic events. The study of these particles is crucial for understanding the most energetic processes in the universe, as they provide insights into physics under conditions that cannot be replicated on Earth.
