headerbild

50 year-old mystery has been solved

Ever since the existence of cosmic rays with individual energies of several Joules was established in the 1960s, speculation has raged as to whether cosmic particles of mean energy of 2 Joules are created in our Milky Way or in distant extragalactic objects.

»Oh-my-God«-partiklen – July 28, 2017

Are you interested in brushing up your Danish? Read a feature article on the Pierre Auger Observatory.

Ultrahigh energy cosmic rays come from outside the Milky Way

Interesting article in the October 2016 issue of the American bi-weekly magazine ScienceNews.

Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory


The Pierre Auger Collaboration has investigated the constraining power of the cosmic ray spectrum and composition measurements with respect to the properties of the possible sources.

Search for photons above 10^18 eV with the hybrid detector of the Pierre Auger Observatory


The Pierre Auger Collaboration has searched for the possible presence of photons with energies exceeding 1018 eV in the flux of cosmic rays arriving at Earth.

Pierre Auger Observatory
Av. San Martín Norte 304
Malargüe, Mendoza, Argentina
Phone: (0260) 4471562 / 556 / 579 int.121
E-mail: webmaster@auger.org

These contents are released under the  CC BY-SA 4.0 International License, unless explicitly stated differently.

© 2021 Pierre Auger Observatory

sm fb  sm fb  sm twitter  sm flickr  youtube  instagram