The 7th International Cosmic Day will be on November, 29 2018.

This year we have greetings from two scientists. On the one hand we receive greetings from the high seas. Juliana Stachurska is on the German research vessel Polarstern of the Alfred Wegener Institute. On this expedition PS116 she travels from northern Germany to Cape Town, South Africa, and investigates cosmic particles. Juliana send to all participants of the ICD: "Many greetings from the Polarstern to the rest of the world! Here, we are measuring cosmic particles, and also investigating the atmosphere, looking for plankton, and mapping the seafloor. Have a great day and have fun exploring the unknown.". If you want to analyze the data from Polarstern yourself, visit Cosmic@Web.

International Cosmic Day will also be celebrated on the German research vessel Polarstern. ⓒ DESY

And we also have greetings from Italy. Professor Luisa Cifarelli from University of Bologna has a video message for all the participating groups:

International Cosmic Day will also be celebrated in Italy. ⓒ EEE

The International Cosmic Day 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.

New: This year, data will be provided that can be analyzed and used to participate in the day. Read more under Participate. And also new, Fermi participates in the ICD for the first time. With that scientists from the three renowned collaborations ATLAS, IceCube and Fermi will present their data regarding the questions addressed by the International Cosmic Day during the international exchange.

Are you interested? Then participate next year!

Also have a look at our new Poster with its great picture and at our contribution to the 35th International Cosmic Ray Conference (Poster (PDF, 1.3 MB), Proceeding (PDF, 3.3 MB)).


The 7th International Cosmic Day is organized by DESY together with Netzwerk Teilchenwelt, IPPOG, QuarkNet and Fermilab.

For more information please contact icd@desy.de.