The 9th International Cosmic Day took place on 4 November 2020.

Scientists and teachers from around the world sent greetings in their national languages to all participants:

The International Cosmic Day (ICD) focuses on the cosmic rays that surround us all the time, but are always unnoticed. So let's explore them for one day and discover what secrets they bring with.

We have special times with the Corona pandemic. Therefore, we will celebrate this day with a slightly different, more open concept than in recent years. So hopefully interested young people worldwide will have the opportunity to spend a day with cosmic particles.

During this day, students, teachers and scientists get together to talk and learn about Cosmic Rays. Questions that can be discussed are:

  • What are cosmic particles?
  • Where do they come from?
  • How can they be measured and what can we learn from them?

If you want to be part of this day and plan a program, get more information here.

The 9th International Cosmic Day is organized by DESY together with Netzwerk Teilchenwelt, IPPOG, QuarkNet and Fermilab.
For more information please contact icd@desy.de.

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