The 5th International Cosmic Day will take place on November 2, 2016.


This event will bring students, teachers and scientists together to talk and learn about Cosmic Rays.

  • What are cosmic particles?
  • Where do they come from?
  • How can they be measured?

During the International Cosmic Day (ICD) you will find answers to these questions. But furthermore, you will carry out your own measurements and get in contact with groups all over the world to compare and discuss your results. You will work like a real scientist in an international collaboration.


A novelty of this year's ICD is the participation of professional scientists from two renowned collaborations: ATLAS and IceCube. ATLAS is a high-energy experiment at the Large Hadron Collider at CERN and focuses on the investigation of the fundamental forces of nature. For this goal protons are accelerated and brought to collision to measure the resulting particles. The astroparticle physics experiment IceCube detects the elusive neutrinos from far-away sources. It explores the physics at exploding stars, gamma-ray bursts, and other origins of high-energy neutrinos. While both experiments follow different aims, their experimental data both contain information about Cosmic Rays. This data will be analayzed regarding the questions adressed by the International Cosmic Day.


Have you become interested? Then participate!


The 5th International Cosmic Day is initiated by DESY in cooperation with Netzwerk Teilchenwelt, IPPOG, QuarkNet and Fermilab.

For more information, please contact icd@desy.de.