Cosmic Ray Particles
The Pierre Auger Observatory in Argentina has been studying a lot of very important things over the years. Yet one of the most important has to be their work on cosmic rays. Discovered by Victor Hess in 1912, which would later lead to him winning the Nobel Prize in Physics in 1936, cosmic rays have proven to be quite important. They are high-energy particles or, well, clusters of particles that move through space at nearly the speed of light. Usually, they are represented by protons or atomic nuclei. Cosmic rays can come from various sources, such as from our own Sun, from outside the solar system in our own galaxy, as well as from distant galaxies. The image you see above shows what happens when they make contact with Earth’s atmosphere, as they shower down secondary particles, with some reaching the surface.