Cosmic radiation refers to high-energy particles that originate from outside the solar system and bombard the Earth from all directions in space. This radiation consists of protons, electrons, alpha particles, and other heavier atomic nuclei. Cosmic radiation is a natural component of our environment and is constantly present, although its intensity can vary based on factors such as solar activity and the Earth's magnetic field. Cosmic radiation poses a potential health risk to astronauts, airline crew, and frequent flyers, as it can penetrate the Earth's atmosphere and reach the surface, where it can damage cells and DNA, leading to an increased risk of cancer and other health problems. Research in this area aims to better understand the sources, composition, and effects of cosmic radiation, as well as develop strategies to mitigate its risks for individuals exposed to it, such as spacecraft and aircraft designers, and healthcare workers.