|We sadly note the loss of our colleague and friend Yuri Koshelkov, who died in Washington DC in September 2020 at the age of 83 years.
Yuri had been Project scientist at the SPARC Office from 1994 to 2003, when the office was in Verrières-le-Buisson in France. He was responsible for the newsletter and edited 19 of them. Yuri ’s carreer developed at the Central Aerological Observatory in Moscow where he used rockets from all over the world to study the upper atmosphere. Yuri was a very eclectic and curious person and an enthusiastic traveler all along his life and he was lucky that his carrer offered him such a possibility.
Marie-Llíse Chanin, former SPARC co-chair