It is a great pleasure and an honor to extend to you a warm invitation to attend the 35th International Cosmic Ray Conference 2017(ICRC2017) at the Busan Exhibition & Convention Center (BEXCO) in Busan, South Korea.

ICRC2017 is organized biennially by the Commission C4 (Astroparticle Physics) of the International Union of Pure and Applied Physics(IUPAP) since 1947. Also the National Organizing Committee(NOC), the International Scientific Program Committee(ISPC) and the International Advisory Committee(IAC) are jointly organized with the ICRC2017.

The main topics of Astroparticle Physics are Cosmic Ray Physics, Gamma-Ray Astronomy, Neutrino Astronomy, Dark Matter Physics, Solar and Heliospheric Physics, Astroparticle Physics Theory and Models and Experimental Methods, Techniques and Instrumentation.

The members of the national organizing committee are very proud to be hosting the ICRC2017 and look forward to welcoming you to our city and country. Busan and its environs are an amazing place to visit. As the maritime capital of Korea, Busan is full of excitement and joy. It is Korea’s top summer vacation destination. You can enjoy nightlife and cultural experiences in the city. Most of all, Busan is very safe area.

The ICRC2017 will provide a wonderful forum for you to refresh your knowledge base and explore the innovations. At the end of this conference, we hope that attendees feel that they have garnered the most up-to-date information available in the field of Astroparticle Physics.

Your sincerely,

Prof. IL H. PARK Chair of the ICRC2017 Organizing Committee