Welcome

The 11th International Cosmic Day takes place on November 22, 2022.

International Cosmic Day (ICD) is dedicated to cosmic rays, which constantly surround us but always go unnoticed. So let's spend a day exploring the world of cosmic rays and discovering what secrets they hold.

On this day, students, teachers and scientists around the world will come 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?

Curious about what the ICD is all about? Watch this video about the ICD's 10th anniversary!

If you want to participate, please register under Registration. In case you have any questions, write us an e-mail to icd@desy.de.

The 11th International Cosmic Day is organized by DESY together with IPPOG and many national networks and partners.