I am pretty sure this guy came to my french island in 1998 or 1999 when I was last year of high school (if it was not him, it was another cosmonaut who had done a very long stay, but I am pretty sure it was him). He came to visit my high school to give a talk. A close classmate, who was half Russian and could speak well the language, translated for us. Kind of cool :D
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Important note:
878 days in total, across all his expeditions. Not continuous.
The longest continuous stay of 473 days was by Valeri Polyakov on board the Mir station in 1994-95.
I am pretty sure this guy came to my french island in 1998 or 1999 when I was last year of high school (if it was not him, it was another cosmonaut who had done a very long stay, but I am pretty sure it was him). He came to visit my high school to give a talk. A close classmate, who was half Russian and could speak well the language, translated for us. Kind of cool :D