Pierre Auger Observatory
The Pierre Auger Cosmic Ray Observatory is studying ultra-high energy cosmic rays, the most energetic and rarest of particles in the universe. When these particles strike the earth's atmosphere, they produce extensive air showers made of billions of secondary particles. While much progress has been made in nearly a century of research in understanding cosmic rays with low to moderate energies, those with extremely high energies remain mysterious.
The Pierre Auger Observatory is working at solving these mysteries.
References
- The main Auger website can be found here.
- Recent news of a possible link between the highest-energy cosmic rays and violent black holes here.
- Information on the Northern Auger Site here.