The Pierre Auger Observatory

The Pierre Auger Observatory is a large research facility located in Argentina that studies high-energy cosmic rays—ultra-energetic particles from space. By observing extensive air showers these particles create when they collide with the Earth's atmosphere, scientists can learn about their origins and the extreme conditions in the universe. The observatory combines a network of ground sensors and telescopes to detect and analyze these events over a vast area, providing valuable insights into the nature of cosmic rays and their role in the universe. It aims to answer fundamental questions about astrophysics and particle physics.