HomeBBC BBC News - World Valery Polyakov: Record-breaking Russian cosmonaut dies aged 80 byR -September 19, 2022 0 Valery Polyakov took the longest-ever spaceflight, clocking up 437 continuous days in the 1990s. from BBC News - World https://ift.tt/RMESCzA via IFTTT Tags BBC BBC News - World Facebook Twitter