International Cosmic Ray Conference 2021

The ICRC Conference Series has been organised biennially since 1947 under the auspices of the International Union of Pure and Applied Physics (IUPAP) and is the largest conference on Astroparticle Physics, bringing together the different topics of the field. The main topics are Cosmic Ray Physics, Gamma-Ray Astronomy, Neutrino Astronomy & Neutrino Physics, Dark Matter Physics and Solar and Heliospheric Physics. Additional new topics in the 2021 conference are Multi-messenger Astronomy and Outreach & Education. Broad reviews and recent scientific results, related theory and modelling, experimental methods, techniques and instrumentation will be presented. The ICRC 2021 will be a prime forum to learn about news and developments in Astroparticle Physics and to appreciate the links between its topics. The conference is jointly organised by the Local Organising Committee (LOC) with representatives of DESY and other German research labs and universities active in Astroparticle Physics, an independent International Scientific Program Committee (ISPC) and the IUPAP Commission C4 (Astroparticle Physics) as International Advisory Committee (IAC). Due to the COVID-19 pandemic, the ICRC was organised as an Online conference.