Due to the special situations in this year 2020, the ICD will not run as usual. Every participating group will plan their own event. We ask all groups to pay attention to the local regulations and to check which event format is more appropriate.

The aim of the day is to talk about cosmic particles, to exchange news about the current research on this topic and, if the situation or technical possibilities allow it, to measure cosmic particles and/or to analyze data together.

Formats that can be used are: Lectures, Masterclasses@home, video transmissions to the classroom, tasks that the students can do at home. On this page we will collect ideas for activities that can be offered. We will also announce events that can be joined by people nationwide, e.g. lectures via LiveStream. You are welcome to suggest us such activities. There are no limits to your ideas. The most important thing is that we all stay healthy.

At the conclusion of the day, it would be great if you could summarize your findings on cosmic rays and what you did during the day in a PDF file. We will add your contribution in a booklet (see Proceedings) and make it available to all participants.



  • Welcome Call
    As every year, there will be a Welcome from the headquarters. This greeting will take place at 9:00 UTC on Zoom: 

QR code for Text Chat



  • Cosmic Selfie Contest
    Take a selfie of you with your detector or your favorite cosmic particle. Use the hashtag #CosmicDay on Facebook or Instagram to share it with everyone. The students with the best picture would be delighted.


  • Kahoot Quiz
    Fancy a quiz? At  you can take part in the official International Cosmic Day Quiz. Use this new pin number: 04431114. The winner will be announced on Facebook.



  • Online Talk on the most extreme particle accelerators in the Universe by Stefan Ohm at 18.00 UTC (in German)
    Join us for an exciting talk on cosmic accelerators. Dr. Stefan Ohm will walk us through an exciting tour of the Universe, starting from the Milky Way to the binary star system Eta Carinae, up to the most far away galaxies to visit the remains of stars that exploded hundreds of millions of years ago. Thanks to gamma-ray telescopes such as H.E.S.S. in Namibia we will discover that particle acceleration in the universe is not an exception, but the rule. Link to the live broadcast:


  • Data Analysis by OCRA 
    The INFN OCRA collaboration provides a series of online activities for cosmic ray data analysis on its webpage (only available in italian language) After an introduction on various techniques for the detection of cosmic rays with experiments on the earth, a laboratory section offers the possibility to analyse the data of real experiments, from educational activities like a cosmic ray telescope located in a Naples metro station to data from experiments dedicated to frontier research, like the Auger observatory in the Argentinian pampa. 


  • EEE Project - Data Analysis 
    For the 2020 ICD the EEE project collaboration organises a meeting for Italian high schools involved or not in the experiment; during the meeting talks by researcher are  foreseen together with reports form schools on an analysis on EEE data to be performed before the ICD 2020. The detailed program together with the instruction for the remote connection and the data analysis can be found (in Italian) at the link: The schools that are not already part of the EEE project are kindly asked to send an email to to ask for participation.